Posted by **RS** on Tuesday, April 30, 2013 at 6:26am.

Mrs.Koh purchased new books for the school library, of which 6 were Mathematics books, 7 were Science books, 10 were Music books, 3 were Art books, and 4 were

social studies books. All of these books were different. She picked a book from each subject to display in a row on a self. How many different possible displays could there be?

- MATHS -
**Reiny**, Tuesday, April 30, 2013 at 8:44am
number of choices for a row

= 6x7x10x3x4 = 5040

now each of these can be arranged in 5! ways

so number of possible different displays = 5!(5040)

= 604800

- MATHS -
**Anonymous**, Tuesday, April 15, 2014 at 9:48pm
there are 8 boxes on the shelf. 2 of the books are fiction. the rest are nonfiction what fraction of the books are fiction

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