SOLUTION: 5 algebra and 4 geometry books are to be arranged on a shelf.how many ways can they be arranged if the algebra books must be together?

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Question 448862: 5 algebra and 4 geometry books are to be arranged on a shelf.how many ways can they be arranged if the algebra books must be together?

Answer by stanbon(75887) About Me  (Show Source):
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5 algebra and 4 geometry books are to be arranged on a shelf.how many ways can they be arranged if the algebra books must be together?
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Treat the 5 algebra books as one book.
There are then 4 geometry and one algebra book
which can be arranged in 5! ways.
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The 5 algebra books can also be arranged in 5! ways
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Total # of arrangements is 5!*5! = 14,400
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Cheers,
Stan H.