If f 2- n C 2- n 2- n C 10- thenA- n 2- n -15-0B- n 2- n -12-0C- n 2- n -8-0D- n 2- n -9-0

The correct option is B n2 n 12 = 0 ^n^2 nC_2=^n^2 nC_10 ^nC_r=^nC_n r ^n^2 nC_n^2 n 2=^n^2 nC_10 n^2 n 2=10 n^2 n 12=0 ...

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Combination

If f 2- n C 2...

Question

If $^{n^{2} - n} C_{2} =^{n^{2} - n} C_{10}$ , then

n² - n - 15 = 0

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n² - n - 12 = 0

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n² - n - 8 = 0

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n² - n - 9 = 0

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