# Binomial coefficient
Last edited: 2023-11-11
Binomial coefficient
Let $0 \leq k \leq n$ for $k,n \in \mathbb{n}$ then define the binomial coefficient of $n$ choose $k$ as
$$\binom{n}{k} = \frac{n!}{k!(n-k)!}.$$Last edited: 2023-11-11
Let $0 \leq k \leq n$ for $k,n \in \mathbb{n}$ then define the binomial coefficient of $n$ choose $k$ as
$$\binom{n}{k} = \frac{n!}{k!(n-k)!}.$$