SOLUTION: 6 married couple in room.2 persons are random.the probability of different sex?

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Question 792774: 6 married couple in room.2 persons are random.the probability of different sex?
Answer by stanbon(75887) About Me  (Show Source):
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6 married couple in room.2 persons are random.the probability of different sex?
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# of different-sex pairs: 6*6 =36
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# of random pairs 12C2 = 12*11/2 = 66
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P(select different sex pair) = 36/66 = 6/11
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Cheers,
Stan H.
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