You want to arrange 6 of your favorite CD's along a shelf. How many different ways can you arrange the CD's assuming that the order of the CD's makes a difference to you?

720 Ways

Explanation:

The answer for arranging n items is in n! ways...

In this case, you can have any of six CDs first, then any of five second, and so on...

The answer is 6! = 6*5*4*3*2*1 = 720 ways.

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