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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.