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Difficult Interview Questions

1. You have a fox, a chicken and a sack of grain. You must cross a river 

with only one of them at a time. If you leave the fox with the chicken he

will eat it; if you leave the chicken with the grain he will eat it. How can

you get all three across safely?

2. You have 12 black socks and 12 white socks mixed up in a drawer.

You're up very early and it's too dark to tell them apart. What's the

smallest number of socks you need to take out (blindly) to be sure of 

having a matching pair?

3. What is special about the following sequence of numbers?

8 5 4 9 1 7 6 10 3 2 0

4. Three travelers register at a hotel and are told that their rooms will cost

$10 each so they pay $30. Later the clerk realizes that he made a

mistake and should have only charged them $25. He gives a bellboy $5

to return to them but the bellboy is dishonest and gives them each only

$1, keeping $2 for himself. So the men actually spent $27 and thebellboy kept $2. What happened to the other dollar of the original $30?

5. You are the bus driver. At your first stop, you pick up 29 people. On

your second stop, 18 of those 29 people get off, and at the same time

10 new passengers arrive. At your next stop, 3 of those 10 passengers

get off, and 13 new passengers come on. On your fourth stop 4 of the

remaining 10 passengers get off, 6 of those new 13 passengers get off 

as well, then 17 new passengers get on. What is the color of the bus

driver's eyes?

6.  A rooster lays an egg at the very top of a slanted roof. Which side is the

egg going to roll off on? 

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7.  A completely black dog was strolling down Main Street during a total

blackout affecting the entire town. Not a single streetlight had been on

for hours. Just as the dog was crossing the middle line a Buick Skylark

with 2 broken headlights speedily approaches his position, but manages

to swerve out of the way just in time. How could the driver have possiblyseen the dog to swerve in time? 

8. In a small cabin in the woods, two men lay dead. The cabin itself is not

burned, but the forest all around is burned to cinders. How did the men

die? 

9. What seven-letter word has hundreds of letters in it? 

10.Tom's mother has three children. One is named April, one is namedMay. What is the third one named? 

11.You are standing outside a closed door. On the other side of the door is

a room that has three light bulbs in it. The room is completely sealed off 

from the outside. It has no windows and nothing can get in or out except

through the door. On the outside of the room there are three light

switches that control each of the respective light bulbs on the other side

of the door.

Your assignment is to determine which light switch controls which light

bulb. You are allowed to enter the room only once, and once you come

out, you must be able to state with 100% certainty which light switch

controls which light bulb. 

12.You have two buckets - one holds exactly 5 gallons and the other 3

gallons. How can you measure 4 gallons of water into the 5 gallon

bucket?

(Assume you have an unlimited supply of water and that there are no

measurement markings of any kind on the buckets.) 

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