# Permutations and combinations

### Learn

### Practice

The counting principleGet 3 of 4 questions to level up!

### Learn

### Practice

PermutationsGet 3 of 4 questions to level up!

### Learn

### Practice

CombinationsGet 3 of 4 questions to level up!

Permutations & combinationsGet 5 of 7 questions to level up!