All right, what is the probability of A and B? The probability that Erica rolls doubles and the second die is four. So this means both A and B happened. Well, let's look at this. Actually, let me write it here. Let me do it in this, let me do it in a new color. So the probability of, I'll write and here in a neutral color, probability of A and B, probability of A and B is equal to, well, now we're looking at, once again, we have 24 equally likely outcomes.