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From (8) boys and (6) girls, (6) members are chosen so that the number of girls is twice the number of boys. How many selections are possible?

Answer and explanation

Correct answer: (420)

The condition gives (2) boys and (4) girls, so ( \binom{8}{2}\binom{6}{4}=420 ). First find the distribution of numbers.

Related tags

Class11CombinationsRatio-ConditionCommitteeExpertPermutations And CombinationsMathematicsClass 11 Mcq

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