So it would be 0.8 times 0.2 times 0.8 times 0.2 times 0.8 times 0.8. Essentially, we have this multiplication. We can rearrange it, because it doesn't matter what order you multiply things in. So it's 0.8 to the fourth power times 0.2 squared. And it doesn't matter. Any of the unique combinations will each have the same probability, because we can just rearrange the order in which we multiply. And then how many of these combinations are there?