Question 279137:  There are 2 geometry books, 4 geography books, 5 history books, and 3 physics books. How many ways are there to put the books on the shelf? 
 Answer by stanbon(75887)      (Show Source): 
You can  put this solution on YOUR website! There are 2 geometry books, 4 geography books, 5 history books, and 3 physics books. How many ways are there to put the books on the shelf? 
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If each book is distinguishable the answer is 14! 
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If each class of book is distinguishable but the  
groups are identical the answer is 14!/(2!*4!*5!*3!) 
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Cheers, 
Stan H. 
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