Show-that-n-C-r-k-0-r-1-n-k-r-

Tinku Tara June 3, 2023 Permutation and Combination 0 Comments

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Question Number 132977 by Raxreedoroid last updated on 17/Feb/21

Show that: ^n C_r =((Π_(k=0) ^(r−1) n−k)/(r!))

Show that :

^{n} C_{r} = \frac{\underset{k = 0}{\prod^{r - 1}} n - k}{r!}

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