Well, for each of these scenarios where one person has already sat in seat one, how many people could sit in seat two? Well, in each of these scenarios, if one person has sat down, there's four people left who haven't been seated, so four people could sit in seat two. So we have five times four scenarios where we have seated seats one and seat two. Now, for each of those 20 scenarios, how many people could sit in seat three? Well, we haven't sat, we haven't, we haven't seaten or sat three of the people yet, so for each of these 20, we could put three different people in seat three. So that gives us five times four times three scenarios. So this is equal to five times four times three scenarios, which is equal to, this is equal to 60.