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Use the Combinations Formula

Question 15

Multiple Choice

Use the Combinations Formula
-Ron finds 8 books at a bookstore that he would like to buy, but he can afford only 5 of them. In how many ways can he make his selection? How many ways can he make his selection if he decides that one of the books is a must?


A) 56; 35
B) 6720; 840
C) 336; 210
D) 3360; 420

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