If 2 - n C 5-9 - n -2 C 5- then the value of n will beA- 7B- 10C- 9D- 5

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Sum of binomial coefficients with alternate signs

If 2 × n C 5=...

Question

If $2 \times^{n} C_{5}$ = $9 \times^{n - 2} C_{5}$ , then the value of n will be

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2 \times

^{n} C_{5} = 9 \times

^{n - 2} C_{5}

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