Committee Formation

Committee Formation

## Formula

A committee of $$r$$ people selected from $$n$$ people can be formed in:

$${}^nC_r$$

ways.

If a particular person must be included:

$${}^{n-1}C_{r-1}$$

If a particular person must be excluded:

$${}^{n-1}C_r$$

## Usage

- Used for committee, team and group selection problems where order does not matter.