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September 16, 2014

September 16, 2014

Posted by **Tiff** on Friday, June 12, 2009 at 10:30pm.

- Algebra -
**drwls**, Friday, June 12, 2009 at 10:43pmPlease clarify if she is taking 3 or 4. You say both numbers.

If she is taking 4, the answer is

9!/(4!*5!) = 9*8*7*6/(1*2*3*4)

= 9*8*7/4 = 126

If she is taking 3, the answer is

9!/(3!*6!) = 9*8*7*6/3! = 9*8*7 = 504

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