And so to do that, first let's think about how many possible outcomes are there from flipping a fair coin five times. So let's think about this. So let's write possible outcomes, possible outcomes from five flips. From five flips. These aren't the possible outcomes for the random variable, this is literally the number of possible outcomes for flipping a coin five times. For example, one possible outcome could be tails, heads, tails, heads, tails. Another possible outcome could be heads, heads, heads, tails, tails.