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Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationnPr & nCrMedium2 minQB
MathematicsMediumsingle choice
Passage / Comprehension

A is a set containing ‘n’ elements. A subset P of A is chose at random. The set A is reconstructed by replacing the elements of ‘P’ A subset Q of ‘A’ is again chosen at random. Then the number of ways of selecting ‘P’ and Q such that

contains just one element is

Options:

Answer:
C
Solution:

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Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:nPr & nCr
⏱ 2mℹ️ Source: QB

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