SOLUTION: A library has 3 books from each of 5 different authors. How many ways can the library arrange the books on the shelf if books by the same author must be placed together?

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Question 903316: A library has 3 books from each of 5 different authors.
How many ways can the library arrange the books on the shelf if books by the same author must be placed together?


Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
15 books
authors together: 3 units
How many ways can the library arrange the books on the shelf if books by the same author must be placed together
3!