1. The problem statement, all variables and given/known data I'm having trouble understanding PMF. We are given a number, say, 927189234. We need to calculate the PMF of (0, 1, ..., 9) in this distribution. 2. Relevant equations 3. The attempt at a solution Calculating the probabilities is easy, P(9) = 2/9 P(8) = 1/9 . . . P(0) = 0/9 I fail to understand if this is the same as the PMF. Any help would be greatly appreciated.