If ^m C_1 =^n C_2 , express m in terms of n.


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Question Number 114943 by ZiYangLee last updated on 22/Sep/20

$If^{m} C_{1} =^{n} C_{2},$ $express m in terms of n .$
	Answered by Dwaipayan Shikari last updated on 22/Sep/20

	$\frac{m!}{1! (m - 1)!} = \frac{n!}{2! (n - 2)!}$ $m = \frac{n (n - 1)}{2}$
	Commented by ZiYangLee last updated on 26/Sep/20

	$Tks$
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