se pigeonhole principle 1. A drawer holds a dozen unmatched brown socks and a dozen unmatched black socks.  In the dark, a man pulls socks at random.  How many socks must he remove to ensure that he has at least one pair of socks that are the same color? 2. In a drawer, there are a dozen brown socks and a dozen black socks that are unmatched.  In the dark, a man pulls socks at random.  How many socks does he need to take out to ensure he has at least two pairs of the same color?

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