SOLUTION: How many combination can an IRS auditor create selecting 5 of 9 tax returns for an audit?

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Question 430372: How many combination can an IRS auditor create selecting 5 of 9 tax returns for an audit?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many combinations can an IRS auditor create selecting 5 of 9 tax returns for an audit?
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9C5 = 9C4 = (9*8*7*6)/(1*2*3*4) = 126
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Cheers,
Stan H.