Or out of the five, and we want to see, we're obviously not actively selecting. One way to think about it, we want to figure out the possibilities that involve out of the five flips, four of them are chosen to be heads, or four of them are heads. And this is over 32 equally likely possibilities. So five choose four is equal to five factorial over four factorial times five minus four factorial, which is equal to, well that's just going to be five factorial. This is going to be one factorial right over here. So that doesn't change the value. You're just going to multiply one factorial times four factorial.