Prove: (left(begin{array}{l}n rend{array}ight)=left(begin{array}{c}n n-rend{array}ight))
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Prove: \(\left(\begin{array}{l}n \\ r\end{array}ight)=\left(\begin{array}{c}n \\ n-r\end{array}ight)\)
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Sure Id be happy to help with that Its a combinatorial identity that we can prove using th...View the full answer
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