SOLUTION: You have 2 science books, 3 language books, and 4 philosophy books. In how many ways can they be arranged on the shelf if all books of the same subject are to be together?
Would
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Would
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Question 839331: You have 2 science books, 3 language books, and 4 philosophy books. In how many ways can they be arranged on the shelf if all books of the same subject are to be together?
Would be 2!
3! and 4!
2*1*3*2*1*4*3*2*1 Answer by ewatrrr(24785) (Show Source):
Hi,
You have 2 science books, 3 language books, and 4 philosophy books.
In how many ways can they be arranged on the shelf
if all books of the same subject are to be together?
The idea is: if books of same subject are to be together...
Then... how many ways can 3 'units' to be arranged:
