# Binomial Coefficient

The binomial coefficient is a notation and function giving the number of ways of picking *k* unordered outcomes from *n* possibilities, also known as a combination or combinatorial number.

Binomial coefficient is a college-level concept that would be first encountered in a discrete mathematics course covering combinatorics.

### Prerequisites

Factorial: | The factorial of a positive integer n, denoted n!, is the product of the first n positive integers. |