Ivan Shishkin, Birch Grove

Coefficient binomial

Definition / Number theory / Usable

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Le coefficient binomial (nk)\binom{n}{k} (prononcé kk parmi nn), est le nombre de parties de cardinal kk d’un ensemble à nn éléments. Il est égal à :
(nk)=n!k!(nk)!\binom{n}{k}=\frac{n!}{k!(n-k)!}

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