Lateral Thinking Puzzles

259
Category:Puzzles - Mycoted Category:Puzzles From Mycoted This page is a category. It makes a table of contents of the pages in this "group". To add a page to this Category: 1. go to that page 2. click the edit tab 3. put this in the page: [[Category:Puzzles]] The page will then be listed here! An Eskimo? or an Indian head? The puzzles on these pages range from the image type puzzle shown here, through to riddles and other puzzles. Subcategories There is 1 subcategory to this category. R Riddles Articles in category "Puzzles" There are 56 articles in this category. http://www.mycoted.com/Category:Puzzles (1 of 3) [5/24/2006 12:40:58 AM]

Transcript of Lateral Thinking Puzzles

Page 1: Lateral Thinking Puzzles

Category:Puzzles - Mycoted

Category:PuzzlesFrom Mycoted

This page is a category. It makes a tableof contents of the pages in this "group".

To add a page to this Category:

1. go to that page 2. click the edit tab 3. put this in the page:

[[Category:Puzzles]]

The page will then be listed here!

An Eskimo? or an Indian head?

The puzzles on these pages range from the image type puzzle shown here, through to riddles and other puzzles.

Subcategories

There is 1 subcategory to this category.

R

● Riddles

Articles in category "Puzzles"

There are 56 articles in this category.

http://www.mycoted.com/Category:Puzzles (1 of 3) [5/24/2006 12:40:58 AM]

Page 2: Lateral Thinking Puzzles

Category:Puzzles - Mycoted

1

● 100 Factorial

4

● 4 men in hats

A

● A Puzzle by Lewis Carroll● Actual Newspaper

Headlines● Anthony and Cleopatra

B

● Bottled Money

C

● Circles● Coin Balance● Count the faces● Crossing the bridge

D

● Death in a Field● Drinking Glasses

F

● Falling Wine● Family Problems● Friday

L

● Light Switches

M

● Manhole Covers● Matches Puzzle 1● Matches Puzzle 2● Matches Puzzle 3● Matches Puzzle 4● Matches Puzzle 5● Matches Puzzle 6● Matches Puzzle 7● Matches Puzzle 8● Maths Product

N

● Nine Dots

P

● Physics Problems● Push that Car

S

● Sheep● Sheep Pens● Straight Lines● Summer Months

T

● The Arm of the Postal Service

T cont.

● The Blind Beggar● The Broken Match● The Coal, Carrot and Scarf● The Deadly Dish● The Deadly Party● The Elder Twin● The Man in the Bar● The Man who Hanged

Himself● The Music Stopped● The Realisation● The Royal Mint● The Swimmer in the Forest● The bird and the cars● The man in the Elevator● There are many correct

ways to answer a test question

● Triangle Ratios● Trouble with Sons

W

● Wetter as it Dries● What is it...

http://www.mycoted.com/Category:Puzzles (2 of 3) [5/24/2006 12:40:58 AM]

Page 3: Lateral Thinking Puzzles

Category:Puzzles - Mycoted

G

● Gaining Space

H

● Heaven● How many stamps

Retrieved from "http://www.mycoted.com/Category:Puzzles"

Category: Categories

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Page 4: Lateral Thinking Puzzles

Image:Eskimo-indian-s.gif - Mycoted

Image:Eskimo-indian-s.gifFrom Mycoted

● Image● File history● Links

Eskimo-indian-s.gif (2KB, MIME type: image/gif)

Eskimo? or North American Indian Head? (small)

File history

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. Click on date to see the file uploaded on that date.

● (del) (cur) 16:15, 18 April 2006 . . Andy (Talk) . . 139x200 (1609 bytes) (Eskimo? or North American Indian Head? (small))

● Edit this file using an external applicationSee the setup instructions for more information.

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Page 5: Lateral Thinking Puzzles

Image:Eskimo-indian-s.gif - Mycoted

Links

The following pages link to this file:

● Category:Puzzles

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Page 6: Lateral Thinking Puzzles

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http://www.mycoted.com/mwiki/images/a/a4/Eskimo-indian-s.gif [5/24/2006 12:41:02 AM]

Page 7: Lateral Thinking Puzzles

User:Andy - Mycoted

User:AndyFrom Mycoted

Andy Beckett

Mycoted Ltd

my useful links;

To edit the navigation window: MediaWiki:Sidebar

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Page 8: Lateral Thinking Puzzles

Login required to edit - Mycoted

Login required to editFrom Mycoted

You have to login to edit pages.

Return to Main Page.

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Page 9: Lateral Thinking Puzzles

Mycoted:Privacy policy - Mycoted

Mycoted:Privacy policyFrom Mycoted

There is currently no text in this page, you can search for this page title in other pages or edit this page.Retrieved from "http://www.mycoted.com/Mycoted:Privacy_policy"

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Page 10: Lateral Thinking Puzzles

Mycoted:About - Mycoted

Mycoted:AboutFrom Mycoted

Mycoted is a UK based company that specialises in Creativity and Innovation.

As part of our aim to help spread creativity and innovation across the world, we have provided this wiki of techniques for everyone to take part in.

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Page 11: Lateral Thinking Puzzles

Mycoted:General disclaimer - Mycoted

Mycoted:General disclaimerFrom Mycoted

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Page 12: Lateral Thinking Puzzles

Category:Riddles - Mycoted

Category:RiddlesFrom Mycoted

Riddles...

Articles in category "Riddles"

There are 19 articles in this category.

A

● Anthony and Cleopatra

D

● Death in a Field

F

● Friday

H

● Heaven

P

● Push that Car

T

● The Arm of the Postal Service

T cont.

● The Blind Beggar● The Broken Match● The Coal, Carrot and

Scarf● The Deadly Dish● The Deadly Party● The Elder Twin● The Man in the Bar

T cont.

● The Man who Hanged Himself

● The Music Stopped● The Realisation● The Swimmer in the Forest● The man in the Elevator● Trouble with Sons

http://www.mycoted.com/Category:Riddles (1 of 2) [5/24/2006 12:41:19 AM]

Page 13: Lateral Thinking Puzzles

Category:Riddles - Mycoted

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Category: Puzzles

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Page 14: Lateral Thinking Puzzles

Anthony and Cleopatra - Mycoted

Anthony and CleopatraFrom Mycoted

Anthony and Cleopatra are lying dead on the floor of a villa in Egypt. Nearby is a broken bowl. There is no mark on either of their bodies and they were not poisoned. How did they die?

Answer

Anthony and Cleopatra were goldfish whose bowl was knocked over by a clumsy dog.

This is one of a set of puzzles which deceive by using human names for animals. This is not a very satisfactory basis for a good puzzle but despite that, the puzzle has enduring popularity.

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Categories: Puzzles | Riddles

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Page 15: Lateral Thinking Puzzles

Death in a Field - Mycoted

Death in a FieldFrom Mycoted

A man is lying dead in a field. Next to him there is an unopened package. There is no other creature in the field. How did he die?

Answer 1

There was a package dropped from an overflying Chopper. The packet the person in the field and he was knocked dead.

Answer 2

The man had jumped from a plane but his parachute had failed to open. It is the unopened package.

Answer 3

The man is highly allergic to plant growth in the field and it suffocated him. The package is just something he was carrying and has no implication to the puzzle.

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Page 16: Lateral Thinking Puzzles

Friday - Mycoted

FridayFrom Mycoted

A man rode into town on Friday. He stayed for three nights and then left on Friday. How come?

Answer

The man's horse was called Friday. OK, so this is really a schoolboy riddle but people keep asking it!

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Page 17: Lateral Thinking Puzzles

Heaven - Mycoted

HeavenFrom Mycoted

A man died and went to Heaven. There were thousands of other people there. They were all naked and all looked as they did at the age of 21. He looked around to see if there was anyone he recognised. He saw a couple and he knew immediately that they were Adam and Eve. How did he know?

Answer

He recognised Adam and Eve as the only people without navels. Because they were not born of women, they had never had umbilical cords and therefore they never had navels. This one seems perfectly logical but it can sometimes spark fierce theological arguments!

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Page 18: Lateral Thinking Puzzles

Push that Car - Mycoted

Push that CarFrom Mycoted

A man pushed his car. He stopped when he reached a hotel at which point he knew he was bankrupt. Why?

Answer

The man pushing the car was a player in a monopoly game and his game piece was a car.

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Page 19: Lateral Thinking Puzzles

The Arm of the Postal Service - Mycoted

The Arm of the Postal ServiceFrom Mycoted

One day a man received a parcel in the post. Carefully packed inside was a human arm. He examined it, repacked it and then sent it on to another man. The second man also carefully examined the arm before taking it to the woods and burying it. Why did they do this?

Answer

The three men had been stranded on a desert island. Desperate for food, they had agreed to amputate their left arms in order to eat them. They swore an oath that each would have his left arm cut off. One of them was a doctor and he cut the arms off his two companions. They were then rescued. But his oath was still binding so he later had to have his arm amputated and sent to his colleagues. This is often told with a further twist whereby a doctor pays a tramp a large sum in order to amputate the tramp's arm which the doctor then sends to another man who inspects it etc. This variation can make for a long night of questioning!

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Page 20: Lateral Thinking Puzzles

The Blind Beggar - Mycoted

The Blind BeggarFrom Mycoted

A blind beggar had a brother who died. What relation was the blind beggar to the brother who died? (Brother is not the answer)

Answer

The blind beggar was the sister of her brother who died. This puzzle is one of a type that depends on the listener making implicit assumptions about gender - in this case that a blind beggar is a man. Similar puzzles involve surgeons who refuse to operate on their sons etc. This is probably the best of the class because it is very simply stated and yet which has the power to baffle those who have not heard it before.

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Page 21: Lateral Thinking Puzzles

The Broken Match - Mycoted

The Broken MatchFrom Mycoted

A man is found dead in a field. He is clutching a broken match. What happened?

Answer

He and a number of other passengers were making a balloon trip in a desperate attempt to flee a country. The balloon had to lose weight to stop it from crashing. He drew the short match and had to jump.

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Page 22: Lateral Thinking Puzzles

The Coal, Carrot and Scarf - Mycoted

The Coal, Carrot and ScarfFrom Mycoted

Five pieces of coal, a carrot and a scarf are lying on the lawn. Nobody put them on the lawn but there is a perfectly logical reason why they should be there. What is it?

Answer

They were used by children who made a snowman. The snow has now melted.

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Page 23: Lateral Thinking Puzzles

The Deadly Dish - Mycoted

The Deadly DishFrom Mycoted

Two men went into a restaurant. They both ordered the same dish from the menu. After they tasted it, one of the men went outside the restaurant and shot himself. Why?

Answer

The dish that the two men ordered was albatross. They had been stranded many years earlier on a desert island. When the man tasted albatross he realised that he had never tasted it before. This meant that the meat he had been given on the island was not albatross as he had been told. He correctly deduced that he had eaten the flesh of his son who had died when they first reached the island. This has something in common with No. 9 above but is in my opinion even better. It is fiendishly difficult to figure out from a standing start. A beautiful aspect of this problem is the subtle fact that he shot himself because he did not recognise the taste of the dish!

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Page 24: Lateral Thinking Puzzles

The Deadly Party - Mycoted

The Deadly PartyFrom Mycoted

A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die?

Hint

He drank as much punch as those who drank it later and died ....

The poison had been in the punch bowl all the time ....

Answer

The poison in the punch came from the ice cubes. When the man drank the punch the ice was fully frozen. Gradually it melted, poisoning the punch.

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Page 25: Lateral Thinking Puzzles

The Elder Twin - Mycoted

The Elder TwinFrom Mycoted

One day Kerry celebrated her birthday. Two days later her older twin brother, Terry, celebrated his birthday. How come?

Answer

At the time she went into labour, the mother of the twins was traveling by boat. The older twin, Terry, was born first early on March 1st. The boat then crossed the International Date line (or any time zone line) and Kerry, the younger twin, was born on February the 28th. In a leap year the younger twin celebrates her birthday two days before her older brother.

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Page 26: Lateral Thinking Puzzles

The Man in the Bar - Mycoted

The Man in the BarFrom Mycoted

A man walks into a bar and asks the barman for a glass of water. The barman pulls out a gun and points it at the man. The man says 'Thank you' and walks out.

Answer

The man had hiccups. The barman recognised this from his speech and drew the gun in order to give him a shock. It worked and cured the hiccups - so the man no longer needed the water.

This puzzle has claims to be the best of the genre. It is simple in its statement, absolutely baffling and yet with a completely satisfying solution. Most people struggle very hard to solve this one yet they like the answer when they hear it or have the satisfaction of figuring it out.

It is a simple puzzle to state but a difficult one to solve. It is a perfect example of a seemingly irrational and incongruous situation having a simple and complete explanation. Amazingly this classic puzzle seems to work in different cultures and languages.

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Page 27: Lateral Thinking Puzzles

The Man who Hanged Himself - Mycoted

The Man who Hanged HimselfFrom Mycoted

Not far from Madrid, there is a large wooden barn. The barn is completely empty except for a dead man hanging from the middle of the central rafter. The rope around his neck is ten feet long and his feet are three feet off the ground. The nearest wall is 20 feet away from the man. It is not possible to climb up the walls or along the rafters. The man hanged himself. How did he do it?

Answer

He climbed on a block of ice which has since melted.

This one is often stated with the clue of a puddle of water, but surely this is too much assistance. It is one of several problems which depend on the change of state of water (snow or ice to water or steam).

An alternative solution is that he climbed the rope, then put the end of the rope around his neck and let go.

Many thanks to Bob Kew for another intriguing solution: He used a bale of hay to stand on, or jump off, which has been eaten by sheep (which have left).

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Page 28: Lateral Thinking Puzzles

The Music Stopped - Mycoted

The Music StoppedFrom Mycoted

The music stopped. She died. Explain.

Answer

She was a circus tight-rope walker who walked blindfolded over a high wire. The band played as she crossed and when the music stopped it was the signal that she had reached the end of the walk and could safely alight. One day the conductor was taken ill and the stand-in conductor ended the piece of music too early. She stepped off to her death.

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Page 29: Lateral Thinking Puzzles

The Realisation - Mycoted

The RealisationFrom Mycoted

A man was walking downstairs in a building when he suddenly realised that his wife had just died. How?

Answer

The man had visited his wife in hospital. She was on a life-support machine. As he was walking down the stairs all the lights went out. There had been a power cut and the emergency back-up systems had failed. He knew that she had died.

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Page 30: Lateral Thinking Puzzles

The Swimmer in the Forest - Mycoted

The Swimmer in the ForestFrom Mycoted

Deep in the forest was found the body of a man who was wearing only swimming trunks, snorkel and facemask. The nearest lake was 8 miles away and the sea was 100 miles away. How had he died?

This is supposedly based on a true incident. Does this make it an urban legend? Many urban legends can be restated as lateral thinking puzzles.

Answer

During a forest fire, a fire-fighting plane had scooped up some water from the lake to drop on the fire. The plane had accidentally picked up the unfortunate swimmer.

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Page 31: Lateral Thinking Puzzles

The man in the Elevator - Mycoted

The man in the ElevatorFrom Mycoted

A man lives on the tenth floor of a building. Every day he takes the elevator to go down to the ground floor to go to work or to go shopping. When he returns he takes the elevator to the seventh floor and walks up the stairs to reach his apartment on the tenth floor. He hates walking so why does he do it?

Answer

The man is too short to reach the number 10 button.

An alternative solution: The elevator only runs to the 7th floor. The riddle did not state that he takes the elevator from the 10th floor in the morning, just that he takes the elevator to the ground floor. He walks to the 7th floor each morning to take the elevator to the ground floor also.

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Page 32: Lateral Thinking Puzzles

Trouble with Sons - Mycoted

Trouble with SonsFrom Mycoted

A woman had two sons who were born on the same hour of the same day of the same year. But they were not twins. How could this be so?

Answer

They were two of a set of triplets (or quadruplets etc.) This simple little puzzle stumps many people. They try outlandish solutions involving test-tube babies or surrogate mothers. Why does the brain search for complex solutions when there is a much simpler one available?

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Page 33: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

The following categories exist in the wiki.

Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

1. Books (18 links)2. Categories (3 links)3. Creativity Techniques (187 links)4. Idea Generation (1 links)5. Idea Selection (5 links)6. People (9 links)7. Problem Definition (11 links)8. Processes (1 links)9. Puzzle Images (1 links)

10. Puzzles (57 links)11. Riddles (19 links)

View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

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Page 34: Lateral Thinking Puzzles

100 Factorial - Mycoted

100 FactorialFrom Mycoted

One for the mathematicians this week, with thanks to Paul Kellet for sending it in.

How many zeros are there at the end of 100! (factorial)?

Answer

24

The trick here is not to calculate 100! on your calculator (which only gives you ten digits of accuracy), but to figure out how high a power of 10 goes into 100! evenly. For every trailing zero, there is a power of 10 that divides 100! evenly. In order to do that, since 10 = 2*5, we need to figure the highest powers of 2 and 5 dividing 100! and take the lesser of the two exponents.

(Why?) Consider what happens when we multiply together 1*2*3*4*5*6*..., starting with the lowest numbers first. Every fifth number, starting with 5, is divisible by 5. That gives you 100/5 = 20 factors of 5 in 100!. But there are more. Every 25th number, starting with 25, has an extra factor of 5 beyond the ones already counted. That gives you 100/25 = 4 more factors of 5 in 100!. To get a third factor of 5 from a single number, it has to be a multiple of 125, and no number <= 100 is, so that is all.

The answer is: [100/5] + [100/5^2] + [100/5^3] + ... = 20 + 4 + 0 + ... = 24

Here [x] means the integer part of x, or the greatest integer not exceeding x.

(Why do we use this [x] instead of x?) All the terms from some point on will be zero, so this is a finite sum. Now for 2's (or any other prime number), the same analysis holds. The answer for the highest power of 2 dividing 100! is [100/2] + [100/2^2] + [100/2^3] + [100/2^4] + ... = 50 + 25 + 12 + 6 + 3 + 1 + 0 + 0 + ... = 97 The smaller of the two is 24, so the highest power of 10 dividing 100! is 10^24, so 100! ends with 24 zeroes.The same analysis works for any factorial n! and any prime p. The highest power of p dividing n! is: [n/p] + [n/p^2] + [n/p^3] + [n/p^4] + ...

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Category: Puzzles

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Page 35: Lateral Thinking Puzzles

100 Factorial - Mycoted

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Page 36: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Page 37: Lateral Thinking Puzzles

4 men in hats - Mycoted

4 men in hatsFrom Mycoted

Shown above are 4 men buried up to their necks in the ground. They cannot move so can only look forward. Between A and B is a brick wall which cannot be seen through. They all know that between them they are wearing 4 hats, 2 x black and 2 x white, but they do not know what colour they are wearing. In order to avoid being shot one of them must call out to the executioner the colour of their hat. If they get it wrong, everyone will be shot. They are not allowed to talk to each other and have 10 minutes to fathom it out.

After 1 minute, one of them calls out.

Question: Which one of them calls out?

Question: Why is he 100% certain of the colour of his hat?

This is not a trick question. There are no outside influences nor other ways of communicating. They cannot move and are buried in a straight line. So A & B can only see their respective sides of the wall, C can see B, and D can see B & C

Answer

C calls out that he is wearing a black hat. Why is he 100% certain of the colour of his hat ?

After a while, C comes to the realization that he must answer.

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Page 38: Lateral Thinking Puzzles

4 men in hats - Mycoted

This is because D can't answer, and neither can A or B.

D can see C and B, but can't determine his own hat colour. B can't see anyone and also can't determine his own hat colour. A is in the same situation as B, where he can't see anyone and can't determine his own hat colour.

Since A, B, and D are silent, that leaves C. C knows he is wearing a black hat because if D saw that both B and C were wearing white hats, then he would have answered. But since D is silent, C knows that he must be wearing a black hat as he can see that B is wearing a white hat.

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Page 39: Lateral Thinking Puzzles

Image:4men.gif - Mycoted

Image:4men.gifFrom Mycoted

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Page 40: Lateral Thinking Puzzles

Image:4men.gif - Mycoted

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Categories - Mycoted

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Page 42: Lateral Thinking Puzzles

A Puzzle by Lewis Carroll - Mycoted

A Puzzle by Lewis CarrollFrom Mycoted

John gave his brother James a box:About it there were many locks.James woke and said it gave him pain;So gave it back to John again.The box was not with lid suppliedYet caused two lids to open wide:And all these locks had never a keyWhat kind of box, then, could it be?

Answer

As curly haired James was sleeping in bed,His brother John gave him a blow on the head.James opened his eyelids, and spying his brother,Doubled his fists, and gave him another.This kind of a box then is not so rareThe lids are the eyelids, the locks are the hair.

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Page 43: Lateral Thinking Puzzles

Categories - Mycoted

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Page 44: Lateral Thinking Puzzles

Actual Newspaper Headlines - Mycoted

Actual Newspaper HeadlinesFrom Mycoted

OK, not really puzzles, but a few headlines that show things can be read in more than one way.

● Something went wrong in jet crash, experts say ● Police begin campaign to run down jaywalkers ● Safety Experts say school bus passengers should be belted ● Drunk gets nine months in violin case ● Survivor of siamese twins joins parents ● Farmer Bill dies in house ● Iraqi head seeks arms ● Is there a ring of debris around Uranus? ● Stud tires out - Prostitutes appeal to Pope ● Panda mating fails; Veterinarian takes over ● Soviet virgin lands short of goal again ● British left waffles on Falkland Islands ● Eye drops off shelf ● Teacher strikes idle kids ● Reagan wins on budget, but more lies ahead ● Squad helps dog bite victim ● Shot off woman's leg helps Nicklaus to 66 ● Enraged cow injures farmer with axe ● Plane too close to ground, crash probe told ● Miners refuse to work after death ● Juvenile court to try shooting defendant ● Stolen painting found by tree ● Two soviet ships collide, one dies ● 2 sisters reunited after 18 years in checkout counter ● Killer sentenced to die for second time in 10 years ● Never withhold herpes infection from loved one ● Drunken drivers paid $1000 in '84 ● War dims hope for peace ● If strike isn't settled quickly, it may last a while ● Cold wave linked to temperatures ● Enfiels couple slain; Police suspect homicide

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Page 45: Lateral Thinking Puzzles

Actual Newspaper Headlines - Mycoted

Category: Puzzles

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Page 47: Lateral Thinking Puzzles

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Page 48: Lateral Thinking Puzzles

Bottled Money - Mycoted

Bottled MoneyFrom Mycoted

If you put a small coin into an empty wine bottle and replace the cork, how would you get the coin out of the bottle without taking out the cork or breaking the bottle?

Answer

Push the cork into the bottle, and shake out the coin.

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Page 49: Lateral Thinking Puzzles

Categories - Mycoted

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Page 50: Lateral Thinking Puzzles

Circles - Mycoted

CirclesFrom Mycoted

Is the inner shape rearly a circle?

Answer

Both 'circles' are perfect circles.

Sometimes it is difficult to see the wood for the trees, and 'information' around the object or problem you are interested in can distort your view. Try covering the lines with a piece of card, or when looking at a problem try and remove some of the 'non-relevant information'.

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Page 51: Lateral Thinking Puzzles

Circles - Mycoted

Category: Puzzles

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Page 52: Lateral Thinking Puzzles

Image:Circles.gif - Mycoted

Image:Circles.gifFrom Mycoted

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Page 53: Lateral Thinking Puzzles

Image:Circles.gif - Mycoted

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Page 54: Lateral Thinking Puzzles

Categories - Mycoted

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Page 55: Lateral Thinking Puzzles

Coin Balance - Mycoted

Coin BalanceFrom Mycoted

There are 12 boxes each containing a coin. There are a total of 11 pennies and 1 other coin in the boxes. You have a balance scale for comparing the weight of the boxes in which you can put any number of boxes on each side. You have at most, three weighings. In these three weighings you must find out which of the 12 boxes has the coin that is not a penny.

Answer

Balance any 4 coins (and call them A) with any other 4 coins (and call them B).

Case 1. - The coins balance.

You now have a stock of 8 coins (A and B) you know are ok. Weigh 3 good coins again 3 unknowns - if they balance then you have identified the coin and can use the last balance to determine if it is heavy or light. If they don't balance you know if it is heavy or light. Weigh 2 of the 3 unknown coins, and they will balance (identifying the unknown coin) or not.

Case 2 - Left hand balance (A) is heavier.

You have a stock of 4 known coins (C) and 8 unknown coins (A and B). Take 2 coins from group A (the left hand side) and 2 from group B (the right hand side) and balance these with 1 coin from A, 1 from B and 2 from C. If they balance, then the 4th coin from A or B is the unknown coin, and you can balance with a good coin to determine which. If A1, A2, B1, B2 are lighter than A3, B3, C1, C2 then either A1, A2 are lighter or B3 is heavier (and can be determined by a single balance) If A1, A2, B1, B2 are heavier than A3, B3, C1, C2 then either A1, A2 are heavier B3 is lighter (and can be determined by a single balance)

Case 3 - Left hand balance (A) is lighter.

As case 2, but swap all heaver / lighter.

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Page 56: Lateral Thinking Puzzles

Coin Balance - Mycoted

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Page 57: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Page 58: Lateral Thinking Puzzles

Count the faces - Mycoted

Count the facesFrom Mycoted

How many faces can you see in the image?

Seven is good, but if you can see 10 you are doing better ...

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Count the faces - Mycoted

● Disclaimers

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Page 60: Lateral Thinking Puzzles

Image:Howmany.jpg - Mycoted

Image:Howmany.jpgFrom Mycoted

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How many faces ? (Puzzle - large)

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Image:Howmany.jpg - Mycoted

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Categories - Mycoted

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Page 63: Lateral Thinking Puzzles

Login required to edit - Mycoted

Login required to editFrom Mycoted

You have to login to edit pages.

Return to Main Page.

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Page 64: Lateral Thinking Puzzles

Crossing the bridge - Mycoted

Crossing the bridgeFrom Mycoted

"U2" has a concert that starts in 17 minutes and they must all cross a bridge to get there. All four men begin on the same side of the bridge.You must help them across to the other side. It is night. There is one flashlight. A maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the flashlight with them. The flashlight must be walked back and forth, it cannot be thrown etc.

Each band member walks at a different speed. A pair must walk together at the rate of the slower man's pace:

Bono:- 1 minute to cross Edge:- 2 minutes to cross Adam:- 5 minutes to cross Larry:-10 minutes to cross

For example: if Bono and Larry walk across first, 10 minutes have elapsed when they get to the other side of the bridge. If Larry then returns with the flashlight, a total of 20 minutes have passed and you have failed the mission.

Note: There is no trick behind this. It is the simple movement of resources in the appropriate order. There are two known answers to this problem. This is based on a question Microsoft gives to all prospective employees.

Note: Microsoft expects you to answer this question in under 5 minutes! There are no tricks to this like meeting halfway or anything. Good luck.

Answer

One solution is that Bono & Edge cross = 2 mins (total = 2) Bono goes back = 1 mins (total = 3) Larry & Adam cross = 10 mins (total = 13) Edge goes back = 2 mins (total = 15) Bono & Edge cross = 2 mins (total = 17)

A 2nd version is swapping Bono and Edge.

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Crossing the bridge - Mycoted

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Page 66: Lateral Thinking Puzzles

Categories - Mycoted

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Categories - Mycoted

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Page 68: Lateral Thinking Puzzles

Drinking Glasses - Mycoted

Drinking GlassesFrom Mycoted

Six drinking glasses stand in a row, with the first three full of water and the next three empty. By handling and moving only one glass at a time, how can you arrange the six glasses so that no full glass stands next to another full glass, and no empty glass stands next to another empty glass. What is the minimum number of moves to solve this puzzle.

Answer

The problem can be solved by moving one glass. Simply pick up the middle one of the full glasses, pour the water into the middle one of the empty glasses, and return the glass to it's original position.

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Categories - Mycoted

CategoriesFrom Mycoted

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Page 70: Lateral Thinking Puzzles

Falling Wine - Mycoted

Falling WineFrom Mycoted

Whilst in a balloon floating stationary off the coast of france, I dropped two wine bottles over the side. If one was empty and the other full, which hit the ground first?

Answer

Neither hit the ground - I was off the coast of france, over the sea.

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Page 71: Lateral Thinking Puzzles

Categories - Mycoted

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Page 72: Lateral Thinking Puzzles

Family Problems - Mycoted

Family ProblemsFrom Mycoted

Can you solve all of these in under 30 seconds?

● A boy has as many sisters as he has brothers, but each of his sisters has twice as many brothers as she has sisters. How many boys and girls are there in the family?

Answer

There are 4 boys and 3 girls.

● A man and his sister were out walking together one Saturday morning. The man pointed across the street to a boy and said: ‘That boy is my nephew.’ The woman replied: ‘He is not my nephew.’ Can you explain this.

Answer

The boy is the woman’s son.

● Two Russians walk down a street in Moscow. One Russian is the father of the other Russian’s son. How are they related?

Answer

They are husband and wife.

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Category: Puzzles

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Page 73: Lateral Thinking Puzzles

Family Problems - Mycoted

● About Mycoted● Disclaimers

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Page 74: Lateral Thinking Puzzles

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Page 75: Lateral Thinking Puzzles

Categories - Mycoted

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Page 76: Lateral Thinking Puzzles

Light Switches - Mycoted

Light SwitchesFrom Mycoted

Three switches outside a windowless room are connected to three lightbulbs inside the room. How can you determine which switch is connected to which bulb if you are only allowed to enter the room once?

Answer

Switch on the first switch, leave it for a minute, and then switch it off again. Then switch on the second switch and enter the room. The second switch will be connected to the light that is on, the first switch will be connected to the light with the warm bulb, and the third switch will be connected to the light with the cold bulb.

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Category: Puzzles

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Page 77: Lateral Thinking Puzzles

Categories - Mycoted

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Page 78: Lateral Thinking Puzzles

Manhole Covers - Mycoted

Manhole CoversFrom Mycoted

Why is it better to have round manhole covers than square ones?

Answer

This is logical rather than lateral, but it is a good puzzle which can be solved by lateral thinking techniques. It is supposedly used by a very well-known software company as an interview question for prospective employees. Solution A square manhole cover can be turned and dropped down the diagonal of the manhole. A round manhole cannot be dropped down the manhole. So for safety and practicality, all manhole covers should be round.

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Page 79: Lateral Thinking Puzzles

Categories - Mycoted

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Page 80: Lateral Thinking Puzzles

Matches Puzzle 1 - Mycoted

Matches Puzzle 1From Mycoted

Remove 8 matches to leave just 2 squares, which should not touch.

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_1"

Category: Puzzles

http://www.mycoted.com/Matches_Puzzle_1 (1 of 2) [5/24/2006 12:43:52 AM]

Page 81: Lateral Thinking Puzzles

Matches Puzzle 1 - Mycoted

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Image:Match1.gif - Mycoted

Image:Match1.gifFrom Mycoted

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Match1.gif (4KB, MIME type: image/gif)

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Page 83: Lateral Thinking Puzzles

Image:Match1.gif - Mycoted

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Page 84: Lateral Thinking Puzzles

Image:Match1a.gif - Mycoted

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Match1a.gif (3KB, MIME type: image/gif)

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Page 85: Lateral Thinking Puzzles

Image:Match1a.gif - Mycoted

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Page 86: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Page 87: Lateral Thinking Puzzles

Matches Puzzle 2 - Mycoted

Matches Puzzle 2From Mycoted

Move 3 matches so that the pattern points down instead of up.

Answer

http://www.mycoted.com/Matches_Puzzle_2 (1 of 2) [5/24/2006 12:44:00 AM]

Page 88: Lateral Thinking Puzzles

Matches Puzzle 2 - Mycoted

Retrieved from "http://www.mycoted.com/Matches_Puzzle_2"

Category: Puzzles

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Page 89: Lateral Thinking Puzzles

Image:Match2.gif - Mycoted

Image:Match2.gifFrom Mycoted

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Match2.gif (3KB, MIME type: image/gif)

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Page 90: Lateral Thinking Puzzles

Image:Match2.gif - Mycoted

Links

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Page 91: Lateral Thinking Puzzles

Image:Match2a.gif - Mycoted

Image:Match2a.gifFrom Mycoted

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Match2a.gif (6KB, MIME type: image/gif)

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Image:Match2a.gif - Mycoted

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Page 93: Lateral Thinking Puzzles

Categories - Mycoted

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Page 94: Lateral Thinking Puzzles

Matches Puzzle 3 - Mycoted

Matches Puzzle 3From Mycoted

Remove 1 match and rearrange the remainder to make 6 equal shapes.

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_3"

Category: Puzzles

http://www.mycoted.com/Matches_Puzzle_3 (1 of 2) [5/24/2006 12:44:11 AM]

Page 95: Lateral Thinking Puzzles

Matches Puzzle 3 - Mycoted

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Page 96: Lateral Thinking Puzzles

Image:Match3.gif - Mycoted

Image:Match3.gifFrom Mycoted

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Match3.gif (3KB, MIME type: image/gif)

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Image:Match3.gif - Mycoted

Links

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Page 98: Lateral Thinking Puzzles

Image:Match3a.gif - Mycoted

Image:Match3a.gifFrom Mycoted

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Match3a.gif (5KB, MIME type: image/gif)

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Image:Match3a.gif - Mycoted

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Page 100: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Page 101: Lateral Thinking Puzzles

Matches Puzzle 4 - Mycoted

Matches Puzzle 4From Mycoted

Make 4 triangles, all the same size as the ones shown with only 6 matches.

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_4"

Category: Puzzles

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Page 102: Lateral Thinking Puzzles

Matches Puzzle 4 - Mycoted

http://www.mycoted.com/Matches_Puzzle_4 (2 of 2) [5/24/2006 12:44:21 AM]

Page 103: Lateral Thinking Puzzles

Image:Match4.gif - Mycoted

Image:Match4.gifFrom Mycoted

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Match4.gif (4KB, MIME type: image/gif)

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Image:Match4.gif - Mycoted

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Page 105: Lateral Thinking Puzzles

Image:Match4a.gif - Mycoted

Image:Match4a.gifFrom Mycoted

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Match4a.gif (3KB, MIME type: image/gif)

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Image:Match4a.gif - Mycoted

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Page 107: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

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Page 108: Lateral Thinking Puzzles

Matches Puzzle 5 - Mycoted

Matches Puzzle 5From Mycoted

Rearrange 3 matches to make 8 equilateral triangles.

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_5"

Category: Puzzles

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Page 109: Lateral Thinking Puzzles

Image:Match5.gif - Mycoted

Image:Match5.gifFrom Mycoted

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Match5.gif (3KB, MIME type: image/gif)

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Image:Match5.gif - Mycoted

Retrieved from "http://www.mycoted.com/Image:Match5.gif"

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Image:Match5a.gif - Mycoted

Image:Match5a.gifFrom Mycoted

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Match5a.gif (2KB, MIME type: image/gif)

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Image:Match5a.gif - Mycoted

Retrieved from "http://www.mycoted.com/Image:Match5a.gif"

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Page 113: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

The following categories exist in the wiki.

Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

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Page 114: Lateral Thinking Puzzles

Matches Puzzle 6 - Mycoted

Matches Puzzle 6From Mycoted

Rearrange 2 matches to make 7 squares

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_6"

Category: Puzzles

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Page 115: Lateral Thinking Puzzles

Matches Puzzle 6 - Mycoted

● Disclaimers

http://www.mycoted.com/Matches_Puzzle_6 (2 of 2) [5/24/2006 12:44:39 AM]

Page 116: Lateral Thinking Puzzles

Image:Match6.gif - Mycoted

Image:Match6.gifFrom Mycoted

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Match6.gif (3KB, MIME type: image/gif)

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Image:Match6.gif - Mycoted

● Matches Puzzle 6

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Page 120: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

1. Books (18 links)2. Categories (3 links)3. Creativity Techniques (187 links)4. Idea Generation (1 links)5. Idea Selection (5 links)6. People (9 links)7. Problem Definition (11 links)8. Processes (1 links)9. Puzzle Images (1 links)

10. Puzzles (57 links)11. Riddles (19 links)

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Page 121: Lateral Thinking Puzzles

Matches Puzzle 7 - Mycoted

Matches Puzzle 7From Mycoted

Rearrange 2 matches to make 4 equal squares, with each match forming the side of a square.

Answer

http://www.mycoted.com/Matches_Puzzle_7 (1 of 2) [5/24/2006 12:44:48 AM]

Page 122: Lateral Thinking Puzzles

Matches Puzzle 7 - Mycoted

Retrieved from "http://www.mycoted.com/Matches_Puzzle_7"

Category: Puzzles

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Page 123: Lateral Thinking Puzzles

Image:Match7.gif - Mycoted

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Page 127: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

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Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

1. Books (18 links)2. Categories (3 links)3. Creativity Techniques (187 links)4. Idea Generation (1 links)5. Idea Selection (5 links)6. People (9 links)7. Problem Definition (11 links)8. Processes (1 links)9. Puzzle Images (1 links)

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Page 128: Lateral Thinking Puzzles

Matches Puzzle 8 - Mycoted

Matches Puzzle 8From Mycoted

Form a bridge from the outer square to the inner square. As one match is exactly the length between squares, there is no surplus to form a bridge. 2 matches cannot be used in a straight line as there is nothing to support them where they join. What is the minimum number of additional matches required?

Answer

Retrieved from "http://www.mycoted.com/Matches_Puzzle_8"

Category: Puzzles

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Page 129: Lateral Thinking Puzzles

Matches Puzzle 8 - Mycoted

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Page 130: Lateral Thinking Puzzles

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Page 134: Lateral Thinking Puzzles

Categories - Mycoted

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Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

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Page 135: Lateral Thinking Puzzles

Maths Product - Mycoted

Maths ProductFrom Mycoted

What is the product (ie. Multiplying all the numbers together) of the following series: (x-a),(x-b),(x-c),.....(x-z)?

(A bit harder but really nothing for maths oriented minds)

Answer

Zero (0). Reasoning: any number or series of numbers multiplied by zero will equal zero.

The factor (x - x) = 0

See, we told you it was really nothing.

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Page 136: Lateral Thinking Puzzles

Categories - Mycoted

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Page 137: Lateral Thinking Puzzles

Nine Dots - Mycoted

Nine DotsFrom Mycoted

Imagine the pattern of dots below drawn on a sheet of paper.

Your task is to join all nine dots using only four (or less) straight lines, without lifting your pencil from the paper and without retracing the lines.

The standard Answer

Many people who try to solve this problem start with the assumption that the lines must be inside the square formed by the dots. But this was never stated in the original problem!

There is always more than one right answer to many problems. Here are some other ways you could have solved the Join the Dots problem:

Another Answer

If we had a thick pencil, we could join the dots with just three lines.

Another Answer

http://www.mycoted.com/Nine_Dots (1 of 4) [5/24/2006 12:45:13 AM]

Page 138: Lateral Thinking Puzzles

Nine Dots - Mycoted

Why stop at three lines? Why not take a very thick pencil and do the job with just one line???

Another Answer

Even with a thinner pencil, we could still make do with three lines by folding the paper so that the dots were closer to each other.

Another Answer

If we laid the paper on the ground, we could draw one very long line which encircles the Earth three times, joining one row of dots each time

Another Answer

And if that sounds a bit far-fetched, we could do the same thing by rolling the paper into a cylinder.

Another Answer

http://www.mycoted.com/Nine_Dots (2 of 4) [5/24/2006 12:45:13 AM]

Page 139: Lateral Thinking Puzzles

Nine Dots - Mycoted

Yet another solution is to fold the paper in three, so the rows of dots all line up, and fold it again and poke the pencil through!

Another Answer

In mathematical terms, parallel lines are sometimes considered to "join" at infinity, so here's a solution that uses just three lines!

Another Answer

Of course, we could question the assumption that we have to follow the rules! This solution uses five lines ;)

Another Answer...

There are at least another 5 solutions I have come across - can you think of others.

Retrieved from "http://www.mycoted.com/Nine_Dots"

Category: Puzzles

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Nine Dots - Mycoted

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Page 141: Lateral Thinking Puzzles

Image:Dots9.gif - Mycoted

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Page 145: Lateral Thinking Puzzles

Image:Dots9 1.gif - Mycoted

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Image:Dots9 4.gif - Mycoted

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Image:Dots9 3.gif - Mycoted

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Page 153: Lateral Thinking Puzzles

Image:Dots9 2.gif - Mycoted

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Image:Dots9 2.gif - Mycoted

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Page 155: Lateral Thinking Puzzles

Image:Dots9 6.gif - Mycoted

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Page 157: Lateral Thinking Puzzles

Image:Dots9 8.gif - Mycoted

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Page 159: Lateral Thinking Puzzles

Image:Dots9 7.gif - Mycoted

Image:Dots9 7.gifFrom Mycoted

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Image:Dots9 7.gif - Mycoted

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Page 161: Lateral Thinking Puzzles

Categories - Mycoted

CategoriesFrom Mycoted

The following categories exist in the wiki.

Showing below up to 11 results starting with #1. View (previous 50) (next 50) (20 | 50 | 100 | 250 | 500).

1. Books (18 links)2. Categories (3 links)3. Creativity Techniques (187 links)4. Idea Generation (1 links)5. Idea Selection (5 links)6. People (9 links)7. Problem Definition (11 links)8. Processes (1 links)9. Puzzle Images (1 links)

10. Puzzles (57 links)11. Riddles (19 links)

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Page 162: Lateral Thinking Puzzles

Physics Problems - Mycoted

Physics ProblemsFrom Mycoted

● Down in a deep coal mine, a mile or so below the surface of the earth, is there more gravity or less gravity than there is at the entrance to the mine up at ground level? (Assume the Earth has a uniform density, and ignore any centrifugal and centripetal forces).

Answer

Down a mineshaft, the gravitational effect would be less because some of the earth's mass is above you. That mass pulls you up, so it cancels the effect of some of the mass below your feet that pulls you down.

● A man holds a rifle horizontally 6 feet above the ground. At the moment he fires it, another bullet is dropped from the same height, 6 feet.

Ignoring frictional effects and the curvature of the earth, which bullet hits the ground first?

Answer

The bullets hit the ground at the same time. The rate at which the moving bullet falls is determined by the force of gravity. This force is vertical and entirely independent of the horizontal velocity of the projectile. Its vertical descent is the same regardless of any horizontal velocity it may have.

● Pour hot water into a thick drinking glass and into a thin wine glass. Which glass in more likely to crack? And why?

Answer

The thick glass is most likely to crack

● A ball, a disc and a ring, each 5 inches in diameter, sit at the top of an inclined plane. If all three

http://www.mycoted.com/Physics_Problems (1 of 3) [5/24/2006 12:45:40 AM]

Page 163: Lateral Thinking Puzzles

Physics Problems - Mycoted

objects start rolling down the incline at the same instant, which one will reach the bottom first? (Assume that they all roll efficiently that is, they are perfectly formed and don't wobble--and ignore any effect of air resistance and friction.)

Answer

The ball will reach the bottom first. Because it has less mass on the outside, and hence less inertia.

● The speed of sound in air is about 740 miles per hour. Suppose that a police car is sounding its siren and is driving towards you at 60 miles per hour. At what speed is the sound of the siren approaching you?

Answer

The speed of sound coming from a police siren is the same whether or not the siren is standing still or moving.

● Rupert is sailing a plastic boat in his bathtub. The boat is loaded with nuts, bolts and washers. If Rupert dumps all these items into the water. allowing his boat to float empty, will the water level in the bath rise or fall?

Answer

The level will fall:the metal in the boat forces the boat to sink lower in the water, displacing water not only for the bolts, but for the air in the hull at water level. if the bolts are allowed to sink, they displace less volume than they did in the boat(try it).

● It is generally accepted that matter expands with increasing temperature, and contracts with decreasing temperature. There is one notable exception. Which is it, and why has nature provided for it?

Answer

Water expands below 3.98°C down to 0°C Otherwise ice would be heavier than water, with catastrophic consequences. Lakes and ocean's would freeze from the bottom up killing all life.

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Page 164: Lateral Thinking Puzzles

Physics Problems - Mycoted

● How could you make a raw egg float halfway between the surface and the bottom of a glass of water?

Answer

You float a raw egg by putting salt in the water until the density of the water = that of the egg.

● An ice cube is floating in a beaker of water, with the entire system at 0º Centigrade(32ºF). Just enough heat is applied to melt the ice cube without raising the temperature of the system. What happens to the water level in the beaker? Does it rise, fall, or stay the same?

Answer

The water level neither rises nor falls: it stays the same. The reason an ice cube floats is because its volume has expanded during crystallisation.

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Page 167: Lateral Thinking Puzzles

Sheep - Mycoted

SheepFrom Mycoted

Is it correct to say;

"The herd of sheep is eating hay in the field"

or

"The herd of sheep are eating hay in the field"?

Answer

Neither - the collective nown for sheep is a flock of sheep - not a herd of sheep.

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Page 169: Lateral Thinking Puzzles

Sheep Pens - Mycoted

Sheep PensFrom Mycoted

A Farmer has twelve sheep and decides to put each of them into a separate pen; but to make the pens he has only 12 long hurdles and 6 half length hurdles. How can he do it?

Answer

The farmer needs to arrange the 12 long hurdles in the shape of a hexagon made of 6 triangles, and then use the six short hurdles to divide each triangle into two.

Alan Butler spotted a solution which left a spare hurdle - can anyone improve on this?

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Page 170: Lateral Thinking Puzzles

Sheep Pens - Mycoted

Tim Bray spotted a solution which had 4 spare hurdles, although I suspect he might have cut the hurdles!!!!

Following my comments suggesting he may have cut some of the hurdles, Tim has come up with a couple of other solutions, which certainly don't need a saw.

This one uses 11 long and 6 short, leaving one spare long hurdle

http://www.mycoted.com/Sheep_Pens (2 of 4) [5/24/2006 12:45:57 AM]

Page 171: Lateral Thinking Puzzles

Sheep Pens - Mycoted

This one uses 12 long and 4 short, leaving two spare hurdles.

Well done Tim, you seem to have the answer with the smallest number of hurdles.

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Sheep Pens - Mycoted

Category: Puzzles

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Image:Sheeppen.gif - Mycoted

Image:Sheeppen.gifFrom Mycoted

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Image:Sheep4.gif - Mycoted

Image:Sheep4.gifFrom Mycoted

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Image:Sheep4.gif - Mycoted

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Page 183: Lateral Thinking Puzzles

Categories - Mycoted

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Page 184: Lateral Thinking Puzzles

Straight Lines - Mycoted

Straight LinesFrom Mycoted

Are the two horrizontal lines straight or curved?

Answer

Both horizontal lines are straight.

Sometimes it is difficult to see the wood for the trees, and 'information' around the object or problem you are interested in can distort your view. Try covering the lines with a piece of card, or when looking at a problem try and remove some of the 'non-relevant information'.

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Category: Puzzles

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Page 185: Lateral Thinking Puzzles

Image:Straightline.gif - Mycoted

Image:Straightline.gifFrom Mycoted

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Straight Line Optical Illusion

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Image:Straightline.gif - Mycoted

Links

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Page 188: Lateral Thinking Puzzles

Summer Months - Mycoted

Summer MonthsFrom Mycoted

What occurs once in June, once in July and twice in August?

Answer

They letter U.

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Page 201: Lateral Thinking Puzzles

The Royal Mint - Mycoted

The Royal MintFrom Mycoted

You are the treasurer in charge of the Royal mint, which produces a single type coin, the grote. There are ten machines producing grotes, one machine is producing grotes weighing one gram less than they should, each coin should weigh 10 grams. You have a set of broken scales which can be fixed to provide one single weigh of a single amount (no weight changes are allowed). Using the scales once you must identify the single faulty machine.

How do you do it?

Answer

Label the machines 1 thru to 10, take one coin from machine 1, 2 from machine 2 etc. However many grams you are out from you calculated total is the number of the machine producing the substandard coins.

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Page 204: Lateral Thinking Puzzles

The bird and the cars - Mycoted

The bird and the carsFrom Mycoted

Consider a road with two cars, at a distance of 100 kilometres, driving towards each other. The left car drives at a speed of forty kilometers per hour and the right car at a speed of sixty kilometers per hour. A bird starts at the same location as the right car and flies at a speed of 80 kilometers per hour. When it reaches the left car it turns its direction, and when it reaches the right car it turns its direction again to the opposite, etcetera.

The Question: What is the total distance that the bird has traveled at the moment that the two cars have reached each other?

Answer

If you have written down a whole page full of mathematical formulae, then you have probably been thinking in the wrong direction for this puzzle. The two cars will meet each other after one hour, hence the bird has been flying for one hour.

The bird has flown 80km when the cars meet.

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The bird and the cars - Mycoted

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Image:Birdcar.gif - Mycoted

Image:Birdcar.gifFrom Mycoted

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Page 210: Lateral Thinking Puzzles

There are many correct ways to answer a test question - Mycoted

There are many correct ways to answer a test questionFrom Mycoted

R.L. Loeffelbein, a physics teacher at Washington University in St. Louis was about to give a student a zero for the student's answer to an examination problem. The student claimed he should receive a perfect score, if the system were not so set up against the student. Instructor and student agreed to submit to an impartial arbiter, Dr. Alexander Calandra, who tells the story.

The examination problem was: "Show how it is possible to determine the height of a tall building with the aid of a barometer."

The student's answer was, "Take the barometer to the top of the building, attach a long rope to it, and lower the barometer to the ground. Then, bring it back up, measuring the length of the rope and barometer. The lengths of the two together is the height of the building."

I, as arbiter, pointed out that the student really had a strong case for full credit since he had answered the problem completely and correctly. On the other hand, of course, full credit would contribute to a high grade for the student in his physics course, and a high grade is supposed to certify that the student knows some physics, a fact that his answer had not confirmed. So it was suggested that the student have another try at answering the problem.

He was given six minutes to answer it, with the warning this time that the answer should indicate some knowledge of physics. At the end of five minutes, he had not written anything. Asked if he wished to give up, he said no, that he had several answers and he was just trying to think which would be the best. In the next minute he dashed off this answer. "Take the barometer to the top of the building. Lean over the edge of the roof, drop the barometer, timing its fall with a stopwatch. Then, using the formula S=½at2, calculate the height of the building. At this point, I asked my colleague if he gave up and he conceded. The student got nearly full credit.

Recalling that the student had said he had other answers, I asked him what they were. "Well," he said, "you could take the barometer out on a sunny day and measure the height of the barometer, the length of its shadow, and length of the building's shadow, then use simple proportion to determine the height of the building. And there is a very basic measurement method you might like. You take the barometer and begin to walk up the stairs. As you climb, you mark off lengths of the barometer along the wall. You then count the number of marks to get the height of the building in barometer units.

"Of course, if you want a more sophisticated method, you can tie the barometer to the end of a string, swing it as a pendulum, and determine the value of 'g.' The height of the building can, in principle, be

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Page 211: Lateral Thinking Puzzles

There are many correct ways to answer a test question - Mycoted

calculated from this.

"And," he concluded, "if you don't limit me to physics solutions, you can take the barometer to the basement and knock on the superintendent's door. When he answers, you say, 'Mr. Superintendent, I have here a fine barometer. If you will tell me the height of this building, I will give you this barometer.'"

Finally, he admitted that he even knew the correct textbook answer -- measuring the air pressure at the bottom and top of the building and applying the appropriate formula illustrating that pressure reduces as height increases -- but that he was so fed up with college instructors trying to teach him how to think instead of showing the structure of the subject matter, that he had decided to rebel.

For my part, I seriously considered changing my grade to unequivocal full credit.

R.L. Loeffelbein has been a teacher and writer for 20 years. He was an assistant professor aboard the first voyage of the University of the Seven Seas.

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Page 213: Lateral Thinking Puzzles

Triangle Ratios - Mycoted

Triangle RatiosFrom Mycoted

A circle has an equilateral triangle touching it's circumference on the outside and another equilateral triangle touching its circumference on the inside, as pictured. What is the ratio of the areas of these two triangles?

Answer

You don't need to do any complicated maths, if you rotate the inner triangle by 180 degrees it should become obviously guickly that the ratio is 1:4.

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Triangle Ratios - Mycoted

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Image:Triang1.gif - Mycoted

Image:Triang1.gifFrom Mycoted

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Triangle Ratios Puzzle - 1

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Image:Triang2.gif - Mycoted

Image:Triang2.gifFrom Mycoted

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Triangle Ratios Puzzle - 2

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Page 221: Lateral Thinking Puzzles

Wetter as it Dries - Mycoted

Wetter as it DriesFrom Mycoted

What gets wetter as it dries?

Answer

A towel.

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Page 223: Lateral Thinking Puzzles

What is it... - Mycoted

What is it...From Mycoted

The man who sold it did not want it.The man who bought it did not need it.The man who used it did not know it.What is it?

Answer

A coffin.

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Page 225: Lateral Thinking Puzzles

Gaining Space - Mycoted

Gaining SpaceFrom Mycoted

Answer

If you look closely at the hypotenuse (long) edge of the triangle, you will find that it is not straight. In one case it is slightly concave (bends in) and in one case it is slightly convex (bends out). The difference between these

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Page 226: Lateral Thinking Puzzles

Gaining Space - Mycoted

two, is the area of one square. Try cutting them out of card and putting a ruler against the edge.

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Image:Gaining space.gif - Mycoted

Image:Gaining space.gifFrom Mycoted

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How many stamps - Mycoted

How many stampsFrom Mycoted

If it takes twelve 1p stamps to make a dozen, how many 3p stamps are needed?

Answer

12 - there are still 12 in a dozen, many people try to divide 12 by 3 and say 4 stamps make 12p, but that is not the question.

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Page 239: Lateral Thinking Puzzles

Category:Books - Mycoted

Category:BooksFrom Mycoted

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Books

These pages are all about books on Creativity and Innovation. If you would like to review a book, then please go to the page for that book, and add your thoughts. If a page does not exist, please create a new page

Articles in category "Books"

There are 18 articles in this category.

A

● A Whack on the Side of the Head

B

● Broken Crayons

C

● Crash Course in Creativity

I

● Instant Brainstorming

● Instant Creativity

● Instant

I cont.

● Instant Stress Management

● Instant Teamwork

O

● Organising a Murder

P

● Personal Brilliance

● Planning Under Pressure: The Strategic Choice Approach

S cont.

● Systems Thinking, Systems Practice

T

● Techniques of Structured Problem Solving

● Thinkertoys

W

● What a Great Idea

● Why didn't I think of that

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Interviewing S

● Soft Systems methodologies in Action

● Strategies of Genius

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Creativity and Innovation categories on mycotedThese are the categories that contain the pages of this site.

Click on any category below to see a list of pages in that category.

A page can be in multiple categories. At the bottom of each page is a list of categories that the page is in.

When adding new pages, please place them in one or more of these categories, or contact us if you wish to set up a new category.

Subcategories

There are 3 subcategories to this category.

B

● Books

C

● Creativity Techniques

P

● Puzzles

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Articles in category "Categories"

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Category:Creativity Techniques - Mycoted

Category:Creativity TechniquesFrom Mycoted

Creativity Techniques - an A to ZThis page is a category. It makes a tableof contents of the pages in this "group".

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[[Category:Creativity Techniques]]

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This is a general category of Creativity and Innovation Techniques, simply listed in alphabetical order. Like most tools these creativity techniques all have their good and bad points. I like to think of these creativity techniques as tools in a toolbox in much the same way as my toolbox at home for DIY. It has a saw, spanner, hammer, knife and all sorts of other things in it, they are all very useful, but you have to pick the right tool (creativity technique) for each job. We will try and provide a little guidance along with each tool to let you know whether it's best used for cutting paper or putting in nails.

For the future, the aim is to also have sub-categories which will identify Techniques for;

● Problem Definition - including problem analysis, redifinition, and all aspects associated with defining the problem clearly.

● Idea Generation - The divergent process of coming up with ideas. ● Idea Selection - The convergent process of reducing all the many ideas into realistic solutions ● Idea Implementation - Turning the refined ideas in reality. ● Processes - Schemes and techniques which look at the overall process from start to finish (or at

least 3 of the above 4 areas)..

Special thanks to the Open University for their kind permission to use material from their publication B822.

Subcategories

There are 5 subcategories to this category.

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Category:Creativity Techniques - Mycoted

I

● Idea Generation● Idea Implementation● Idea Selection

P

● Problem Definition● Processes

Articles in category "Creativity Techniques"

There are 182 articles in this category.

7

● 7 Step Model

A

● AIDA● ARIZ● Advantages, Limitations

and Unique Qualities● Algorithm of Inventive

Problem Solving● Alternative Scenarios● Analogies● Anonymous Voting● Assumption Busting● Assumption Surfacing● Attribute Listing

B

● Backwards Forwards Planning

F cont.

● Five Ws and H● Flow charts● Focus Groups● Focusing● Force-Field Analysis● Force-Fit Game● Free Association● Fresh eye

G

● Gallery method● Gap Analysis● Goal Orientation● Greetings Cards

H

● Help-Hinder● Heuristic Ideation

Technique

P cont.

● Problem Inventory Analysis - PIA

● Problem Reversal● Progressive Hurdles● Progressive Revelation● Provocation

Q

● Q-Sort● Quality Circles

R

● Random Stimuli● Rawlinson Brainstorming● Receptivity to Ideas● Reframing Values● Relational Words● Relaxation● Reversals

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Category:Creativity Techniques - Mycoted

● Boundary Examination● Boundary Relaxation● BrainSketching● Brainstorming● Brainwriting● Browsing● Brutethink● Bug Listing● BulletProofing● Bunches of Bananas

C

● CATWOE● Card Story Boards● Cartoon Story Board● Causal Mapping● Charette● Cherry Split● Chunking● Circle of Opportunity● Clarification● Classic Brainstorming● Collective Notebook● Comparison tables● Component Detailing● Concept Fan● Consensus Mapping● Constrained BrainWriting● Contradiction Analysis● Controlling Imagery● Crawford Slip Writing● Creative Problem Solving -

CPS● Criteria for idea-finding

potential● Critical Path Diagrams

● Hexagon Modelling● Highlighting

I

● Idea Advocate● Idea Box● Ideal Final Result● Imagery Manipulation● Imagery for Answering

Questions● Imaginary Brainstorming● Implementation Checklists● Improved Nominal Group

Technique● Interpretive structural

modeling● Ishikawa Diagram

K

● KJ-Method● Keeping a Dream Diary● Kepner and Tregoe method

L

● Laddering● Lateral Thinking● Listing● Listing Pros and Cons

M

● Metaplan Information Market

● Mind Mapping● Morphological Analysis

● RoleStorming

S

● SCAMMPERR● SCAMPER● SDI● SODA● SWOT Analysis● Sculptures● Search Conference● Sequential-Attributes

Matrix● Similarities and

Differences● Simple Rating Methods● Simplex● Six Thinking Hats● Slice and Dice● Snowball Technique● Soft Systems Method● Stakeholder Analysis● Sticking Dots● Stimulus Analysis● Story Writing● Strategic Assumption

Testing● Strategic Choice Approach● Strategic Management

Process● Successive Element

Integration● SuperGroup● SuperHeroes● Synectics● Systematic Inventive

Thinking

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D

● DO IT● Decision seminar● Delphi● Dialectical Approaches● Dimensional Analysis● Disney Creativity Strategy● Do Nothing● Drawing

E

● Escape Thinking● Essay Writing● Estimate-Discuss-Estimate● Exaggeration● Excursions

F

● Factors in selling ideas● False Faces● Fishbone Diagram

● Morphological Forced Connections

● Multiple Redefinition

N

● NAF● NLP● Negative Brainstorming● Nominal Group Technique● Nominal-Interacting

Technique● Notebook

O

● Observer and Merged Viewpoints

● Osborn's Checklist● Other Peoples Definitions● Other Peoples Viewpoints

P

● PDCA● PIPS● PMI● Paired Comparison● Panel Consensus● Paraphrasing Key Words● Personal Balance Sheet● Pictures as Idea Triggers● Pin Cards● Plusses Potentials and

Concerns● Potential Problem Analysis● Preliminary Questions● Problem Centred

T

● TILMAG● TRIZ● Technology Monitoring● Think Tank● Thril● Transactional Planning● Trigger Method● Trigger Sessions● Tug of War

U

● Using Crazy Ideas● Using Experts

V

● Value Brainstorming● Value Engineering● Visual Brainstorming● Visualising a Goal

W

● Who Are You● Why Why Why● Wishing● Working with Dreams and

Images

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Leadership

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Category: Categories

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Category:Idea Generation - Mycoted

Category:Idea GenerationFrom Mycoted

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These techniques all relate to generating ideas / solutions for the problem (but do not include choosing or refining options).

Articles in category "Idea Generation"

There is 1 article in this category.

B

● Brainstorming

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Category:Idea Selection - Mycoted

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These techniques all relate to selecting ideas for potential solutions. You can generally not take all ideas forward, hence these techniques help to filter them down to the good ones.

Articles in category "Idea Selection"

There are 5 articles in this category.

A

● Anonymous Voting

C

● Consensus Mapping

I

● Idea Advocate

N

● NAF

S

● Sticking Dots

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Category:People - Mycoted

Category:PeopleFrom Mycoted

These are just some of the people, either authors, or otherwise, who have been referenced on pages here.

Articles in category "People"

There are 9 articles in this category.

A

● Albert Einstein● Alex Osborn

B

● Brian Clegg

C

● Charles Thompson

E

● Edward de Bono

M

● Michael Michalko

P

● Peter Checkland

R

● Robert Alan Black

V

● VanGundy

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Category:Problem Definition - Mycoted

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These techniques all relate to defining the problem, and the boundary conditions of the problem.

Articles in category "Problem Definition"

There are 11 articles in this category.

A

● Assumption Busting

● Assumption Surfacing

B

● Backwards Forwards Planning

B cont.

● Boundary Examination

C

● CATWOE● Chunking

D

● Do Nothing

F

● Five Ws and H

M

● Multiple Redefinition

P

● Paraphrasing Key Words

W

● Why Why Why

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Category:Processes - Mycoted

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Schemes and techniques which look at the overall process from start to finish (or at least 3 of the 4 areas)

Articles in category "Processes"

There is 1 article in this category.

S

● Synectics

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Categories - Mycoted

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