SOLUTION: If three different statistics books,two different epidemiology books and three different economics books are arranged on a shelf how many different arrangements are possible if the

Question 1146161: If three different statistics books,two different epidemiology books and three different economics books are arranged on a shelf how many different arrangements are possible if the books in each particular subject must all stand together? And only if statistics books must stand together what will be the number of arrangement? Thanks
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
First question
3 sets
3*2*1=6 ways
1+2+3=6 sets
6*5*4*3*2*1=720 ways if only the stat books need to stay together

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