And then the probability of tails, since it's a fair coin, is also 0.5, times 0.5 times 0.5. So each of these, there's a 1 half chance of getting a heads times a 1 half chance of a tails times a 1 half chance of a heads times a 1 half chance of a tails, et cetera, et cetera. So each of these are essentially 1 half times 1 half, 6 times. So the probability of each of the combinations is 1 half to the 6th power. And so how many combinations are there like this, where you get, out of the 6 flips, you're choosing, you're essentially choosing 4 heads. You're choosing, I'm, once again, the god of probability. I am picking 4, exactly 4, of the 6 heads.