Well, to get A and B, you have to have doubles and the four-sided die needs to be a four. Essentially, you have to have doubles four. Well, there's only one outcome out of the 24 equally likely outcomes that meets that situation, this one right over here. So there is a 1 4th, sorry, 1 24th probability. So one over 24. What is probability of A times probability of B given A? Well, here we could just go back to our numbers right over here.