So if you cared about order, this is the number of permutations you could pick four items out of 60 without replacing them. Now, this is when you cared about order, but you're kind of over-counting because it's counting different permutations that are essentially the same combination, the same set of four numbers, and that's why we're dividing by 4 factorial here. Because 4 factorial is essentially the number of ways that four numbers can be arranged in four places. The first number can be in one of four slots, the second in one of three, then two, then one. That's why you're dividing by 4 factorial. But anyway, let's just evaluate this. This will tell us how many possible outcomes are there for the lottery game.