Easy Riddle #472 (hard)

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.

Easy Riddle #295 (hard)

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?

Easy Riddle #823 (hard)

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?

Easy Riddle #99 (hard)

Question: How many people do you need to have the odds be in favor (at least 50% chance) of two people having the same birthday?

Easy Riddle #567 (hard)

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.
How can all men and monkeys make it to the other side?