1. The problem statement, all variables and given/known data Assuming 10 people pick a number between 1-120 and no two numbers can be the same, how many combinations of numbers can their be? 2. Relevant equations C=N^s 3. The attempt at a solution So I know the total possible for 120 would be just 120^10, but if I want to solve for the numbers never repeating in a sequence I'm not sure how.