SOLUTION: if a given set has 13 elements, how many of its subsets have somewhere from 4 through 8 elements?

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Question 1055524: if a given set has 13 elements, how many of its subsets have somewhere from 4 through 8 elements?
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!

13C4+13C5+13C6+13C7+1313C8 = 

715+1287+1716+1716+1287 = 6721

Edwin

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