A2.K.1Permutations & combinations01/04
Permutations and combinations.
Step01of 04
Both COUNT arrangements of items, but they answer different questions.
| Permutation | →order MATTERS — different orders count separately |
| Combination | →order does NOT matter — only the chosen set counts |
"Choosing a president, VP, secretary" → permutation (the roles distinguish the order). "Choosing a 3-person committee" → combination (no roles, just the set of three).