So let's say we have six people. We have person A, we have person B, we have person C, person D, person E, and we have person F. So we have six people, and for the sake of this video, we're going to say, oh, we want to figure out all the scenarios, all the possibilities, all the permutations, all the ways that we could put them into three chairs. So that's chair number one, chair number two, and chair number three. This is all a review, this is covered in the permutations video, but it'll be very instructive as we move into a new concept. So what are all of the permutations of putting six different people into three chairs? Well, like we've seen before, we could start with the first chair, and we could say, look, if we haven't seated anyone yet, how many different people could we put in chair number one? Well, there's six different people who could be in chair number one.