GRE Problem Solving Question 604

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Source: Magoosh

In a certain sock drawer, there are 4 pairs of black socks, 3 pairs of gray socks and 2 pairs of orange socks. If socks are removed at random without replacement, what is the minimum number of socks that must be removed in order to ensure that two socks of the same color have been removed?

  • A 4
  • B 7
  • C 9
  • D 10
  • E 11

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