Question

Five squares of a chessboard are chosen at random, the probability that three are of one colour and two of another is

A (32C2 + 32C3) / 64C5
B 32C2 × 32C3 × 32C2 × 32C3 / 64C5
C 2 × 32C2 × 32C3 / 64C5
D (32C2 + 32C3) × 2 / 64C5
E None of these
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