Mathematical Puzzles

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1. jmountAug 2025
   Peter Winkler shares some great variations of this: "Boy Born on Tuesday" (p. xix) and "Men with Sisters" (p. xxii) in "Mathematical Puzzles".

   "Mrs. Chance has two children of different ages. At least one of them is a boy born on Tuesday. What is the probability that both of them are boys?"

   (note: it is a puzzle, not a biology or data demography problem. so there are 50/50 independence assumptions on gender and uniform day of week assumptions prior to adding the conditioning.)

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2. jmountNov 2024
   Peter Winkler's Mathematical Puzzles is an amazing continuation with great teaching.
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3. apricotAug 2016
   Peter Winkler's books of mathematical puzzles ("Mathematical Puzzles" and "Mathematical Mind-Benders") are top-notch and highly recommended. You will learn something there even if you've read dozens of puzzle books before.
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4. zawerfMay 2018
   Where can I find more of these?

   Do you guys recommend this author's books such as https://www.amazon.com/Mathematical-Puzzles-Connoisseurs-Pet... ?

   (It's hard to find the right search term for this that doesn't return a lot of non-mathematical brainteasers or stuff aimed at kids)

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