Although what we're going to see later in this video is that we don't want to differentiate between them. To us, it makes no difference if we get this ordering, heads A, heads B, heads C, tails, tails, or if we get this ordering, heads A, heads C, or heads B, tails, tails. We can't count these as two different orderings. We can only count this as one. So what we're going to do is first come up with all of the different orderings if we cared about the difference between A, B, and C. And then we're going to divide by all of the different ways that you can arrange three different things. So how many ways can we put A, B, and C into these five buckets that we can view as the flips if we cared about A, B, and C? So let's start with A.