Mr. Ball has 20 CDs and wants to arrange them in his car's CD player that holds 6 CDs. There are many ways to arrange the CDs in the player since order matters. The number of arrangements is calculated using a factorial formula.
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4.4 permutations where objects are identical
1. 1 Mr. Ball has 20 CD's in his car. How many ways can he arrange them in his CD player (if it holds 6 CD's)?
