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I think I understand part A (I got 445 as an answer) but I'm not quite sure how to start off part B. | I think I understand part A (I got 445 as an answer) but I'm not quite sure how to start off part B. | ||
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| + | For part B would it be a sum of the places you can put each book? What I mean to say is, to go along with the hint the book provides, to do 4+1-1 choose 1-1 to place first book, then 5+1-1 choose 1-1 to place second, so on, until book twelve, since as you go on, each time there is one more place you can put the next book | ||
Revision as of 16:42, 11 February 2009
I think I understand part A (I got 445 as an answer) but I'm not quite sure how to start off part B.
For part B would it be a sum of the places you can put each book? What I mean to say is, to go along with the hint the book provides, to do 4+1-1 choose 1-1 to place first book, then 5+1-1 choose 1-1 to place second, so on, until book twelve, since as you go on, each time there is one more place you can put the next book
