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## Homework Statement

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?

## Homework Equations

C=N^s

## 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.