Sometimes when dealing with probabilities, things don't always work out the way you might expect. My favorite example of this is the Monty Hall problem. The name comes from the game show Let's Make a ...

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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 ...

Calculating probabilities can be tricky, with subtle changes in context giving quite different results. I was reminded of this recently after setting BrainTwister #10 for New Scientist readers, which ...