Posted by bobby on .
P(n,5)=20P(n,3)
Solve for n

math gr 2 
bobpursley,
N!/(N5)! = 20n!/(n3)!
1=20(n5)(n4)
multiply out the last two terms, then find n with the quadratic formula.
Posted by bobby on .
P(n,5)=20P(n,3)
Solve for n
N!/(N5)! = 20n!/(n3)!
1=20(n5)(n4)
multiply out the last two terms, then find n with the quadratic formula.