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Answer :

There are 150 different ways can 30 books be placed on these shelves if the books are all different.

The number of shelves on a bookshelf is 5.

The number of books on one shelf is 30.

The number of books on 5 shelves= The number of books on one shelf *The number of shelves.

which implies that, the total number of books =30*5

By multiplying 30 by 5 we get 150

total number of books =150.

hence, bookshelves have 150 books if books are placed differently.

To learn more about the arrangments of books on shelves, click on brainly.com/question/23160291.

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