- #1
temaire
- 279
- 0
Homework Statement
Solve for n.
[tex]11_{C}_n=330[/tex]
Homework Equations
[tex]n_{C}_r=\frac{n!}{(n-r)!r!}[/tex]
Sorry if the combination formula looks bad. I don't know how to write the comb. formula with Latex.
The Attempt at a Solution
I solved for n as far as [tex]n!(11-n)!=133056[/tex] How do I go further with this? The answers are 4 or 7.