A drawer contains loose red, blue, and green socks. If you pull socks out one by one without looking, what is the minimum number of socks you must remove to guarantee getting a matching pair?
4 socks
There are 3 distinct colors. By the Pigeonhole Principle, if you draw 4 socks, at least two must share the same color.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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