Tag Archives: puzzle

Tossing a biased coin

Each Friday, the ever-entertaining Professor Richard Wiseman poses on his blog a problem for readers to solve. He posts the solution on Monday. (Wiseman is at the University of Hertfordshire in England, so watch out if you are several time … Continue reading

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The Mirror Puzzle

Most people laugh when I ask this question. Then they tieĀ  themselves into knots trying to answer it. Explanations are usually accompanied by diagrams featuring stick figures. Actually you can answer it in less than 50 words, without diagrams. Here’s … Continue reading

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Another boy? A logical puzzle.

Here’s something to stir your neurons. You meet a woman who tells you that she has two children and that one of them is a boy. What is the probability that the other child is also a boy? Assume that … Continue reading

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