SOLUTION: Suppose you have a summer reading list with 15 books and you have to read 3. How many different combinations of books can you read?
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Question 888765: Suppose you have a summer reading list with 15 books and you have to read 3. How many different combinations of books can you read?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
There are 15*14*13 = 2,730 ways to read 3 books where order matters.
Since order does not matter, we divide by 3! = 3*2*1 = 6 to get 2,730/6 = 455
There are 455 different combinations.
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