ddestinyclark5757 ddestinyclark5757

14-03-2018
Mathematics

contestada

Find the number of ways to listen to 4 CDs from a selection of 8 CDs.

1680

336

70

50

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jtcarrol jtcarrol

19-03-2018

1680. 8p4, which is 8!/(8-4)!

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