And you could have reasoned through this, because if you're saying you want five heads, that means you have one tail. And there's five different places you could put that one tail. There are five possibilities with one tail, five of the 32 equally likely. And then, and you could probably guess what we're going to get for x equals five, because having five heads means you have zero tails, and there's only going to be one possibility out of the 32 with zero tails, or that have all heads. Let's write that down. So the probability that a random variable x is equal to five, so we have all five heads. And you could say this is five, and we're choosing five of them to be heads out of the 32 equally likely possibilities.