If ^{{n^2} - n}{C_2}{ = ^{{n^2} - n}}{C_{10}} | vedclass

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Question

(d) $^{{n^2} - n}{C_2}{ = ^{{n^2} - n}}{C_{10}}{ \Rightarrow ^{{n^2} - n}}{C_{{n^2} - n - 2}}{ = ^{{n^2} - n}}{C_{10}}$

$ \Rightarrow {n^2} - n - 2

Vedclass · Accepted Answer

$4$ or  $- 3$

Vedclass · Answer

(d) $^{{n^2} - n}{C_2}{ = ^{{n^2} - n}}{C_{10}}{ \Rightarrow ^{{n^2} - n}}{C_{{n^2} - n - 2}}{ = ^{{n^2} - n}}{C_{10}}$

$ \Rightarrow {n^2} - n - 2 = 10$ or $n = 4,\; - 3$.

If $^{{n^2} - n}{C_2}{ = ^{{n^2} - n}}{C_{10}}$, then $n = $

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