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JEE MATHEMATICS MCQ: PERMUTATIONS

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Analyzing +4 | -1

{ }^{4 n} C_{2 n}:{ }^{2 n} C_n

is equal to

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Correct option: A

\frac{\{1 \cdot 3 \cdot 5 \ldots(4 n-1)\}}{\{1 \cdot 3 \cdot 5 \ldots(2 n-1)\}^2}

Option A is correct because the ratio of combinations can be simplified to the given expression by expanding the factorials and cancelling terms.

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