Six minus two factorial, and what's this going to be equal to? This is going to be equal to six times five times four times three times two, and I'll just throw in the one there, although it doesn't change the value, over two times one, and six minus two is four, so that's going to be four factorial. So this right over here is four factorial, so times four times three times two times one. Well, that and that is going to cancel. And then, let's see, six divided by two is three. So this is 15. There's 15 different ways that you could get, that you could pick two things out of six, I guess is one way to say it, or there's 15, did I say 16?