SOLUTION: Betty has 20 different books. If 4 books are selected from these 20 books, how many combinations are there?

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Question 1173852: Betty has 20 different books.
If 4 books are selected from these 20 books, how many combinations are there?
Answer by ikleyn(52778)   (Show Source): You can put this solution on YOUR website!
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     =  = 4845.    ANSWER

Solved.



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