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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy
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Application +4 | -1
If m=  nC2m = {\;^n}{C_2}, then   mC2{\;^m}{C_2} is equal to
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Correct option: C
3.n+1C4{3^{.n + 1}}{C_4}
Option B (3.n+1C4{3^{.n + 1}}{C_4}) is correct because by substituting m=  nC2m = {\;^n}{C_2} into mˆC2{\^m}{C_2} and simplifying, we arrive at 3 n+1C43{\ ^{n + 1}}{C_4}.

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