The number of ants born tomorrow in the universe, that's my random variable Z. Is this a discrete random variable or a continuous random variable? Once again, we can count the number of values this could take on. This could be 1, it could be 2, it could be 3, it could be 4, it could be 5 quadrillion ants, it could be 5 quadrillion and 1. We can actually count the values. Those values are discrete. Once again, this right over here is a discrete random variable.