## Section 12.2: Combinations

## 12.2 Outline

- Committee problem
- definition
- combination formula
- deck of cards

- Pascal’s triangle
*n*choose*r*- table entries

- Counting with the binomial theorem
- binomial theorem
- number of subsets

## 12.2 Essential Ideas

**Combinations **A combination of

*r*elements selected from a … See the whole entry