# If nC12 = nC5, find the value of n.

We know that if , then one of the following conditions need to be satisfied:

i. p = q

ii. n = p + q

From the problem we can say that,

12≠5

So, the condition(ii) must be satisfied,

n = 12 + 5

n = 17.

The value of n is 17.

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