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

Algebra
Tutor: None Selected Time limit: 1 Day

A. 1680 B.336 C.70 D.50


Jun 18th, 2015

8C4 = 8! /(4! * 4!) = 70

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Jun 18th, 2015

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Jun 18th, 2015
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Jun 18th, 2015
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