SOLUTION: How many ways can you arrange 12 books in groups of 3

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Question 703675: How many ways can you arrange 12 books in groups of 3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many ways can you arrange 12 books in groups of 3
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Pick the groups of 3 in 12C3 = (12*11*10)/(1*2*3) = 220 ways
Arrange the 4 groups 4! = 24 ways
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Arrange each of the 4 groups in 3! = 6 ways
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Total # of arrangements: 6*24*220 = 31680
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Cheers,
Stan H.
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