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23 May, 11:52

There are 9 different colors of paint to choose from. Out of the 9 colors, how many ways can 4 different colors be chosen?

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  1. 23 May, 12:42
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    This is the concept of combination, the number of ways 4 different color can be chosen from 9 different colors will be:

    9C4

    = (9!) / (4! (9-4) !)

    =362,880 / (24*120)

    =362,880/2880

    =126

    thus the number of ways is 126 ways
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