system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the difference between permutations and combinations?
gpt
For Permutations the order matters, for Combinations the order does not matter.

A permutation example is, a "combination lock" the combination ONLY works in a certain order 3-25-17; if you put it in backways 17-25-3, the lock stays locked.

A combination example is, you have 10 friends, pick 3 to go to a concert. The order doesn't matter, the three you pick are going to the concert.