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kcla1996
 3 years ago
You have checked out b books from the library, where b is a number greater than 5. You plan to read three of the books and return them at the end of this week. In how many ways can you pick the books you will read first, second, and third?
kcla1996
 3 years ago
You have checked out b books from the library, where b is a number greater than 5. You plan to read three of the books and return them at the end of this week. In how many ways can you pick the books you will read first, second, and third?

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jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1Hint: you have 'b' choices for the first book, b1 choices for the second book and b2 choices for the third book

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1Look up the counting principle and that may help you out

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1It's not counting as in (1, 2, 3, 4...), it's counting as counting a very large number of items http://www.regentsprep.org/Regents/math/ALGEBRA/APR1/Lcount.htm

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1close, but not quite

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1Say you pick out 10 books, you would have 10 books for the first choice, 9 for the second, and 8 for third So you would have 10*9*8 = 720 choices possible

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1multiply out b, b1 and b2

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1b(b1)(b2) = ???
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