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Class 11MathematicsPermutations and CombinationsCombinationsExpert
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From (8) couples, (4) persons are chosen, but no married couple should be selected together. How many selections are possible?

Answer and explanation

Correct answer: (1120)

First choose (4) couples and then (1) person from each, giving ( \binom{8}{4}2^4=1120 ). Choosing only one from a couple gives (2) choices.

Related tags

Class11CombinationsCouplesNo-PairExpertPermutations And CombinationsMathematicsClass 11 Mcq
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