So in the permutation world, these are literally 12 of the 120 permutations. But what if all we cared about is the three people we're choosing to sit down, but we don't care in what order that they're sitting or in which chair they're sitting? So in that world, these would all be one. This is all the same set of three people if we don't care which chair they're sitting in. This would also be the same set of three people. And so this question, if I have six people sitting in three chairs, how many ways can I choose three people out of the six where I don't care which chair they sit on? And I encourage you to pause the video and try to think of what that number would actually be.