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You have 5 cookbooks, 4 engineering books, and 3 Science books.

1. How many ways are there to arrange the books on a book shelf?

2. How many ways are there to arrange the books on a book shelf if the books from each category must stay together?

 Sep 26, 2020
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watch this.

 

https://www.youtube.com/watch?v=i6dtnKXG4tg

 

 

 

 

To others:

Please do not answer over me.

 Sep 26, 2020

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