So I'm essentially just saying, how many combinations can I get where I pick three out of these eight? And so that should immediately ring a bell that we're essentially saying, out of eight things, eight, we're going to choose three. And that's, you know, how many combinations of three can we pick of eight? And that's, we went over in the last video. And let's do it with the formula first. So let me write the formula up here, just so you remember it. But I also want to give you the intuition again for the formula.