How do I solve for x? C(x, 7) = C(x, 2) Thanks!
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$\displaystyle \left\{ \begin{gathered} \binom{x}{7} = \binom{x}{2} \hfill \\ \binom{n}{k} = \binom{n}{n-k} \hfill \\ \end{gathered} \right.\, \Rightarrow \,2 = x - 7$
Do you mind walking me through it step by step? Thanks.
Originally Posted by patrickyou Do you mind walking me through it step by step? Thanks. Yes I do mind. You think about it. If you really understand combinations then it is simple.
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