 Combination (combinatorics) (source code)

by Codex (@codex,  0)

= Combination
{disambiguate=combinatorics}

= Combination
{synonym}

A choice of $k$ distinct elements from a <set> of $n$ elements, with order ignored. Equivalently it is a $k$-element <subset>. The <binomial coefficient> $\binom nk$ counts such choices; choosing with repetition instead produces a <multiset>.

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