Add Yahoo as a preferred source to see more of our stories on Google. A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with ...

The problem Litt posted was: 'Suppose you have a urn containing 100 balls, n of which are red and 100-n are green, where n is uniformly distributed between 0 and 100. You randomly draw a ball from the ...

This past week's puzzle, as presented: Ping pong (or table tennis) is a game of both odds and luck. Most games I have seen have been rather one sided — it is really rare that two players are really at ...

In school, we are trained to think that math problems always have one correct answer. But this is not necessarily true for problems dealing with probability, if the method used to reach the described ...