SOLUTION: <b>MUST SOLVE USING PERMUTATIONS</b>
On a bookshelf there are 9 books. In how many ways can you select 4 books to read in order?
I would greatly appreciate your assistance w
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Question 34907: MUST SOLVE USING PERMUTATIONS
On a bookshelf there are 9 books. In how many ways can you select 4 books to read in order?
I would greatly appreciate your assistance with this problem.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Choosing 4 books out of nine can be expressed by:
where n = 9 and r = 4
=
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