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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?
 one year ago
 one year 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?
 one year ago
 one year ago

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jim_thompson5910Best ResponseYou've already chosen the best response.1
Hint: you have 'b' choices for the first book, b1 choices for the second book and b2 choices for the third book
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
Look up the counting principle and that may help you out
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
It'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
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
close, but not quite
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
Say 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
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
multiply out b, b1 and b2
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
b(b1)(b2) = ???
 one year ago
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