So the way that we would refer to this, the probability of both of these happening, yes, it's definitely equal to the probability of the first green times, now this is kind of the new idea, the probability of the second green given, this little line right over here, just this straight up vertical line, just means given that the first was green. Now what is the probability that the second marble is green given that the first marble was green? Well, we draw through the scenario right over here. If the first marble is green, there are four possible outcomes, not five anymore. And two of them satisfy your criteria. So the probability of the first marble being green and the second marble being green is going to be the probability that your first is green, so it's going to be 3 5ths, times the probability that the second is green given that the first was green. Now you have one less marble in the bag, and we're assuming that the first pick was green, so you only have two green marbles left.