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February 27, 2015

February 27, 2015

Posted by **Amy** on Wednesday, October 30, 2013 at 9:52pm.

P(20,x,23)=

P(x.23)=

- statistics -
**kuai**, Wednesday, October 30, 2013 at 10:07pmyou use that formula when you know what to do.

nCr

nPr

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