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Question
If nC12 = nC5, find the value of n.
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Solution
We have,
nC12 = nC5
(i) p = q
(ii) n = p + q
Therefore, from the question nC12 = nC5, we can say that
12 ≠ 5
Therefore, the condition (ii) must be satisfied,
n = 12 + 5
n = 17
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