And what you're going to want to do here is use three arguments. So the first one is the number of trials. So in this case it is seven. And if you're doing it on the free response section of the AP test, you should make it very clear that that right over there is your N. The graders will actually look for that to make sure that you're not just guessing what goes where. So you would say that is my N and then you would say your probability, 0.35. And once again, if you're taking the test, you should mark that. That is your P. And then last but not least, what is the probability that a binomial variable, when you're taking seven trials with a probability of success of each of them being 0.35, that you have exactly four successes?