So similarly, if I'm just picking flips, and I have to say, OK, three of these flips are going to get into the heads car, or are going to sit on, you know, heads is like they're people sitting down. I don't want to confuse you too much. But essentially, I'm just going to choose three things out of the eight. 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.