So what is the probability of getting exactly 1 heads? And I put that in quotes to say, well, we're just talking about 1 head there, but it's called heads when you're dealing with coins. Anyway, I think you get what I'm talking about. Now to think about this, let's think about how many different possible ways we can get 4 flips of a coin. We're going to have 1 flip, then another flip, then another flip, then another flip. And this first flip has 2 possibilities, it could be heads or tails. The second flip has 2 possibilities.