Puzzles Ppt
Transcript of Puzzles Ppt
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PUZZLES
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This square has eleven letters missing, which you have to replace:
Every row, column AND the main diagonals contain all the letters in the word "BRAVE".
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This square has eleven letters missing, which you have to replace:
Every row, column AND the main diagonals contain all the letters in the word "BRAVE".
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Given only one of each letter in the alphabet, what are
the smallest and largest numbers that you could write down?
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Given only one of each letter in the alphabet, what are
the smallest and largest numbers that you could write down?
MINUS FORTY (allowing negative numbers)
FIVE THOUSAND
These are the smallest and largest possible numbers.
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What letter of the alphabet is the one which comes nine letters before the letter which
comes three letters after the first letter to occur four times in this sentence?
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What letter of the alphabet is the one which comes nine letters before the letter which
comes three letters after the first letter to occur four times in this sentence?
"n"
You get this by working backwards through the puzzle: the first letter to occur four times is t,
three letters after that is w, and nine letters before that is n.
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Draw a circle with radius 5 cm.
Draw a second circle with radius 3 cm just touching the most North-East part of the first
circle.
Draw two small triangles, 4 cm apart, resting on top of the second circle.
Inside the second circle, arranged so that they are symmetrical about a vertical linethrough the centre, draw these four things:
a small triangle at the centre
two small circles 3 cm apart, above the triangle
the bottom half of a circle, below the triangle.
WHAT'S MISSING?
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WHAT'S MISSING?
Feet, tail and whiskers at least!
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How many triangles and quadrilaterals
are there in this diagram?
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How many triangles and quadrilateralsare there in this diagram?
64 Triangles
36 Quadrilaterals
Total: 100 shapes.
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Write out the numbers from 1 to 20 in words:
One, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen,
sixteen, seventeen, eighteen, nineteen, twenty.
Now put them in ALPHABETICAL order. Which number stays where it is?
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Write out the numbers from 1 to 20 in words:
One, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen,
sixteen, seventeen, eighteen, nineteen, twenty.
Now put them in ALPHABETICAL order. Which number stays where it is?
The only number which stays in the same place after they have all been put in alphabetical order
is the number .... FIVE !
The new order is as follows:
EIGHT, EIGHTEEN, ELEVEN, FIFTEEN, FIVE, FOUR, FOURTEEN, NINE, NINETEEN,ONE, SEVEN, SEVENTEEN, SIX, SIXTEEN, TEN, THIRTEEN, THREE, TWELVE,
TWENTY, TWO.
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An old Mathematics book contained this addition sum which had been marked correct by the teacher:
The three squares in the diagram are where the paper was so bad I couldn't read them.
What were the three missing numbers?
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An old Mathematics book contained this addition sum which had been marked correct by the teacher:
The three squares in the diagram are where the paper was so bad I couldn't read them.
What were the three missing numbers?
The most obvious place to start was the 0 on the bottom (don't forget to carry the 1!).
Working towards the left, the next one has to be 9 to make the total 16 (+1 = 17) so we carry another 1.
That means the top left digit must be empty (or a zero):
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Using three straight lines, divide the cabbage patch up into six sections with two cabbages in each section.
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Using three straight lines, divide the cabbage patch up into six sections with two cabbages in each section.
Here is one way:
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Party Time!
Several people of different ages brought things for the party:
Charlie, who's 12, brought the POTATO CRISPS.
Wayne brought the FIZZY LEMONADE (he's 13).
Helen (11) brought the PAPER PLATES, and
her brother Peter (9) brought the PAPER CUPS.
Sheila is the same age as Charlie: she brought the PARTY POPPERS.
Young Horace brought the PEANUTS:
how old is he?
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Party Time!
Several people of different ages brought things for the party:
Charlie, who's 12, brought the POTATO CRISPS.
Wayne brought the FIZZY LEMONADE (he's 13).
Helen (11) brought the PAPER PLATES, and
her brother Peter (9) brought the PAPER CUPS.
Sheila is the same age as Charlie: she brought the PARTY POPPERS.
Young Horace brought the PEANUTS:
how old is he?
7
(Count the letters!)
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"What day do you go back to school, Horace?" asked his grandmother one day.
"Well," Horace replied, "Nine days ago, the day before yesterday was three weeks before the second day of
term."
If Horace had this conversation on a Sunday, what day of the week did he start school?
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"What day do you go back to school, Horace?" asked his grandmother one day.
"Well," Horace replied, "Nine days ago, the day before yesterday was three weeks before the second day of
term."
If Horace had this conversation on a Sunday, what day of the week did he start school?
The reasoning runs as follows:
Today is Sunday.
So seven days ago was Sunday too. That means that NINE days ago was Friday.
On Friday, the day before yesterday was Wednesday.
Three weeks later is Wednesday again.
That is the second day of term.
So the term began on Tuesday. Wasn't that easy?
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What mathematical symbol can be put between 5 and 9,
to get a number bigger than 5 and smaller than 9?
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What mathematical symbol can be put between 5 and 9,
to get a number bigger than 5 and smaller than 9?
(Caution: Trick)
A Decimal Point
5.9
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The following equation is wrong: 101 - 102 = 1Move one numeral to make it correct.
Move one line to make it correct.
(Caution: Tricks!)
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The following equation is wrong: 101 - 102 = 1
Move one numeral to make it correct.
Move one line to make it correct.
(Caution: Tricks!)
Move the numeral 2 half a line up to achieve 101-102 = 1
Move one of the lines that makes the "=" over to the "-" to make: 101 = 102 1
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How can I get the answer 24 by only using the numbers 8,8,3,3.
You can use add, subtract, multiply, divide, and parentheses.
Bonus rules: also allowed are logarithms, factorials and roots
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How can I get the answer 24 by only using the numbers 8,8,3,3.
You can use add, subtract, multiply, divide, and parentheses.
Bonus rules: also allowed are logarithms, factorials and roots
8/(3-(8/3))
= 8/(1/3)
= 24
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Using 8 exactly eight times to make a 1000.
You can use any mathematical symbols
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Using 8 exactly eight times to make a 1000.
You can use any mathematical symbols
888 + 88 + 8 + 8 + 8
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The box below is a Magic Square. This means that the numbersadd up to the same total in every direction.
Every row, column and diagonal adds up to 111. But there are some numbers missing!
Fill in the missing numbers. They are all different.
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The box below is a Magic Square. This means that the numbersadd up to the same total in every direction.
Every row, column and diagonal adds up to 111. But there are some numbers missing!
Fill in the missing numbers. They are all different.
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What is the missing number in Triangle Four?
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What is the missing number in Triangle Four?
The product of the two largest
minus the square of the smallest,
So the missing number is 45-16 = 29
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Write down the next line in the following pattern:
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Write down the next line in the following pattern:
Each row describes the grouping of the digits in the line above.
The top row "1" has one one, so we write "11" for the second row.
The second row "11" has two ones, so we write "21" for the third row.
And so on.
To describe the line: 31131211131221
We say: one three, two ones, one three, one one, one two, three ones,
one three, one one, two twos and one one.
Which is: 13211311123113112211
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ABCD E = DCBA
(Replace letters with digits and have the sum be true. A,B,C,D and E are all different digits.)
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ABCD E = DCBA(Replace letters with digits and have the sum be true. A,B,C,D and E are all different digits.)
2178 4 = 8712
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Solve this:
ALFA + BETA + GAMA = DELTA
(Replace letters with digits and have the sum be true. A,B,C,D and E are all different digits.)
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Solve this:
ALFA + BETA + GAMA = DELTA
(Replace letters with digits and have the sum be true. A,B,C,D and E are all different digits.)
5305 + 2475 + 6595 = 14375
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Solve this:
CAT = (C + A + T) C A T
(Replace letters with digits and have the sum be true. A,C and T are all different digits.)
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Solve this:
CAT = (C + A + T) C A T
(Replace letters with digits and have the sum be true. A,C and T are all different digits.)
135 = (1 + 3 + 5) 1 3 5
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There are 2 trees in a garden (tree "A" and "B") and on the both trees are some birds.
The birds of tree A say to the birds of tree B that if one of you comes to our tree, then our
population will be the double of yours.
Then the birds of tree B tell to the birds of tree A that if one of you comes here, then our
population will be equal to that of yours.
Now answer: How many birds in each tree?
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There are 2 trees in a garden (tree "A" and "B") and on the both trees are some birds.
The birds of tree A say to the birds of tree B that if one of you comes to our tree, then our
population will be the double of yours.
Then the birds of tree B tell to the birds of tree A that if one of you comes here, then our
population will be equal to that of yours.
Now answer: How many birds in each tree?
The solution is 7 and 5.
7 on tree A, and 5 on tree B