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September 4, 2015
Posted by **bobby** on Tuesday, September 30, 2008 at 9:18pm.

Solve for n

- math gr 2 -
**bobpursley**, Tuesday, September 30, 2008 at 9:21pmN!/(N-5)! = 20n!/(n-3)!

1=20(n-5)(n-4)

multiply out the last two terms, then find n with the quadratic formula.