But what about these conditions, that it's made up of independent trials, or that the probability of success on each trial is constant? Well, if I get a king, the probability of king on the first trial, probability, I say king, on first trial would be equal to, well, out of a deck of 52 cards, you're going to have four kings in it. So the probability of a king on the first trial would be four out of 52. But what about the probability of getting a king on the second, on the second trial? What would this be equal to? Well, it depends on what happened on the first trial. If the first trial, you had a king, well, then you would have, so let's see, this would be the situation given first trial, first king.