The Weekend Edition Saturday Math Guy, Stanford professor Keith Devlin, has a problem. In fact, he has more than one... which he's happy to share with Scott Simon. What is the probability that in a ...

Here's a fun brain teaser: How large does a random group of people have to be for there to be a 50% chance that at least two of the people will share a birthday? The answer is 23, which surprises many ...

(via SciShow) There's a rather famous problem in math of probability called the Birthday Paradox. Let's get into how it works, and how creative uses of this hypothetical problem have real-world ...

Unlikeliness characterizes coincidences. A common kind of coincidence, for example, is one in which you think of a friend and that friend calls you. Your first thought might be, “What are the chances?