So that's 5, 6, 7, 8. And that equals 2 to the 8th. So the number of outcomes is just going to be 2 to the total number of flips. And hopefully that makes sense to you. If not, you might want to re-watch some of the earlier videos. But that's the easy part. So there's 2 to the 8th possible outcomes when you flip a fair coin eight times.