Multiple Choice Questions on nC1 is equal to ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

nC1 is equal to ........

Quantitative Aptitude ( CCS) Permutation & Combination
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     nC1 is equal to ? 

    n2

    Incorrect Answer

    n

    Correct Answer

    1

    Incorrect Answer

    0

    Incorrect Answer
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    Explanation:

    nCr  = n! / r ! (n-r) !     

    =>  n! / 1 ! (n-1) ! 

    => n (n-1) ! / 1 ! (n-1) ! = n

    By: Deepak Dawra
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