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OpenStudy (anonymous):
9C3 over 11C3 Please help. I can't figure this out.
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OpenStudy (anonymous):
So in this expression, if C3 one term or are they seperate?
OpenStudy (anonymous):
It's a little 9 C and a little 3 over a little 11 C and a little 3
OpenStudy (anonymous):
so exponents?
OpenStudy (anonymous):
Yes.
OpenStudy (welshfella):
a quick way to do them is 9*8*7 ---- = 9C3 3*2*1
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OpenStudy (welshfella):
oh if they are exponents forget the above!
OpenStudy (anonymous):
Ok.
OpenStudy (welshfella):
the way they are written could mean 9C3 is the number of combinations taken 3 at a time of 9 items
OpenStudy (anonymous):
How do I do the math?
OpenStudy (welshfella):
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