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 ...

A drawer contains 12 identical black socks and 12 identical white socks. If you pick two socks at random, what is the probability of getting a matching pair? That was ...

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 ...

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 ...

From the Wikipedia page devoted to the “Monty Hall problem“: Suppose you’re on a game show like “Let’s Make a Deal,” and you’re given the choice of three doors: Behind one door is a new car; behind ...