Mathematics - Permutation & Combination Question with Solution | TestHub
MathematicsPermutation & CombinationnPr & nCrMedium2 minQB
MathematicsMediumsingle choice
Statement I: The number of four-letter selections from PARALLEL is 15. Statement II: The coefficient of in , for , is 15 .
Options:
Answer:
D
Solution:
As in Q37, the number of selections is 22. The negative-binomial coefficient is . The source's printed total 22 contradicts its claim of 15.
Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:nPr & nCr
⏱ 2mℹ️ Source: QB
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