A box contains blue, red, and green socks. If you close your eyes, what is the minimum number of socks you must pull out to guarantee you have at least one matching pair?
4
Using the Pigeonhole Principle, with 3 colors of socks, the 4th sock must match one of the first three.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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