# Factorials Exercises

### Example 1

How many ways can you arrange 10 different items?

### Example 2

Your mom has framed photos of you from 1st grade to 7th. She is going to hang them in the hall in a long row. How many ways can she display them?

### Example 3

If she hangs these randomly, what is the probability that they will be in chronological order from left to right or right to left.