SOLUTION: in how many ways can a family of 9 divide itself into 3 groups that each group contains 3persons?

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Question 961183: in how many ways can a family of 9 divide itself into 3 groups that each group contains 3persons?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in how many ways can a family of 9 divide itself into 3 groups that each group contains 3persons?
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Ans: 9C3 = (9*8*7)/(1*2*3) = 3*4*7 = 84 ways
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Cheers,
Stan H.