Minimum chances to draw a pair of same color
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| Your sock drawer contains ten pairs of white socks and ten pairs of black socks. If you’re only allowed to take one sock from the drawer at a time and you can’t see what color sock you’re taking until you’ve taken it, how many socks do you have to take before you’re guaranteed to have at least one matching pair? |
Three. In the worst case, the first two socks you take out will consist of one black sock and one white sock. The next sock you take out is guaranteed to match one or the other.
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