So let's go to the probability that x equals two, oh sorry, x equals one. So the probability that x equals one is going to be equal to, well how do you get one head? Well it could be the first one could be head and then the rest of them are going to be tails. The second one could be head and then the rest of them are going to be tails. I could write them all out, but you could see that there's just five different places to have that one head. So five out of the 32 equally likely outcomes involve one head. So let me write that down.