*2k views**197 ratings**7 saves*

**Question: **

You have a large number of friends coming over and they all get thirsty. Your first friend asks for 1/2 a cup of water. Your second friend asks for 1/4 a cup of water. Your third friend asks for 1/8 a cup of water, etc.

How many cups of water do you need to serve your friends?

*1k views**71 ratings**1 saves*

**Question: **A man was born on January 1st, 23 B.C. and died January 2nd, 23 A.D. How old did he live to be?

*5k views**591 ratings**18 saves*

**Question: **You have two coconuts and you want to find out how high they can be dropped from a 100 story building before they break. But you only have $1.40 and the elevator costs a dime each time you ride it up (it's free for rides down).

How can you drop the coconuts to guarantee you will find the lowest floor they will break at, while starting and ending at floor 1?

Note: They break when dropped from the same height and they don't weaken from getting dropped.

*49.2k views**65 ratings**4 saves*

**Question: **There are 3 men, two Chimps, and one Gorilla on one side of a river:

- They have a boat but only the men and the Gorilla can row the boat across, so there must always be a human and/or Gorilla on the boat.
- The boat can only carry two people/monkeys.
- If monkeys and humans are together on one side of the river there must be as many or more people than monkeys for the men's safety.

*2k views**206 ratings**10 saves*

**Question: **John has three daughters who are all unmarried. The youngest always lies, the oldest always tells the truth, and the one in the middle either tells the truth or lies. A very rich young man comes to John's house and says he wishes to marry one of his daughters. Naturally he wants to marry the oldest or the youngest so he will always know if she is lying or telling the truth. John agrees but says he can only ask one of the girls a yes or no question to decide which one he marries. They all look the same age.

What one question does he ask one of the daughters at random to figure out which daughter is the youngest or oldest?

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