math
posted by monica .
Your sock drawer has 10 blue socks, 16 red socks, and 12 white socks. If you reach into the drawer in the dark, how many socks do you need to pull out to be sure you have a matching pair?
I can't figure out.

There are three colours in all, blue, red, and white.
Therefore the maximum you can get without getting a pair is three.
In the worst case, how many socks do you need to pull to get a pair?
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