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Home  >>  CBSE XI  >>  Math  >>  Permutations and Combinations
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If $nC_{12}=nC_8$ then $n$ is equal to

$\begin{array}{1 1}(A)\;20\\(B)\;12\\(C)\;6\\(D)\;30\end{array} $

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1 Answer

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$n=12+8$
$\;\;\;=20$
Hence (A) is the correct answer.
answered May 16, 2014 by sreemathi.v
 

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