<PRE><B>Question 437759</B>
 if there are 5 different stat books, 3 dif prob books and 3 dif exam prep books, how many ways can they be arranged if all the books 0f the same type remain next to each other??? 
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Arrange the 3 types of book: 3! = 6 ways
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Arrange the books in each of the 3 types: 3!*3!*3! = 6^3 = 
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Ans: 6^4 = 1296
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Cheers,
Stan H.</PRE>