Then this is two heads right over here. And then this is three heads, so that doesn't count. So there are three outcomes where we, with exactly two heads. So, let me spell heads properly. Two heads. So the probability of flipping of exactly two heads, and the word exactly is important, because if you didn't say exactly, then maybe three heads, well, you flip two heads, so you have to say exactly two heads. So you don't include the situation where you get three heads.