You have 10 pairs of socks, five black and five blue, but they are not paired up. instead they are all mixed up in a drawer. it is early in the morning and you do not want to turn on the light.
1. how many socks must you pull out to guarantee that you have a pair of one color?
2. how many must you pull out to have two good pairs(each pair is the same color)?
3. how many must you pull out to be certain that you have a pair of black socks? use a systematic approach to list all possible outcomes as a way to justify the answer in each case.
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