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JEE MATHEMATICS MCQ: COMBINATIONS

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Application +4 | -1

If

\frac{{ }^{n+2} C_{6}}{{ }^{n-2} P_{2}}=11

, then

\mathrm{n}

satisfies the equation :

View answer and explanation

Correct option: C

n^{2}+3 n-108=0

Option C (

n^2 + 3n - 108 = 0

) is correct because solving the given equation for n yields n=9, which satisfies the equation

n^2 + 3n - 108 = 0

.

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n