Multiple Choice Questions on If C n 12 C n 8 then C 22 n is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

If C n 12 C n 8 then C 22 n is ........

Quantitative Aptitude ( CCS) Permutation & Combination
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    If C(n, 12) = C(n, 8) then C (22, n) is 

    231

    Correct Answer

    281

    Incorrect Answer

    261

    Incorrect Answer

    271

    Incorrect Answer
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    Explanation:

    If C(n, 12) = C(n, 8), then n = 12+ 8 = 20. 
    Thus C(22, n) = C(22, 20) = 22•21/2•1 = 231

    By: MIRZA SADDAM HUSSAIN
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