binomial coefficientとは 意味・読み方・使い方

名詞

binomial coefficient (plural binomial coefficients)

1. (combinatorics) a coefficient of any of the terms in the expansion of the binomial (x+y), defined by ${\displaystyle {n \choose k}={\frac {n!}{k!(n-k)!}}}$, read as "n choose k"