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 ...

Last week’s puzzle was the camel and the bananas. Firstly, a moment’s thought shows that the camel can’t get any bananas to market in one go. It is 1000 km away and so the camel will eat all of its ...

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. Two puzzles are presented each week: the Riddler Express for those ...

Puzzles with counterintuitive solutions do more than challenge us. They expose how easily our fast, reflexive thinking can lead us astray. When the Monty Hall problem was first posed by Marilyn Vos ...

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