$$\binom{n}{k}=\frac{n!}{k!(n-k)!}$$ The expression above is also known as binomial coefficient. Is there a similar naming convention that describes the one below? $$k!\binom{n}{k}=\frac{n!}{(n-k)!}$$
2026-05-11 04:17:56.1778473076
Special name for $k!\binom{n}{k}=\frac{n!}{(n-k)!}$
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$\displaystyle \frac{n!}{(n-k)!} = k!\binom{n}{k} = n(n-1)(n-2)\cdots (n-k+1)$ is the falling factorial.