# Math Help - Solving for n....

1. ## Solving for n....

I have this formula and need to solve for n. How do I do it since it is a factorial? Please show me, my mind is too tired to figure it out. $n!/{k!(n-k)!}$

2. To solve for n, your expression must be equated to something else. I.e it must have an equals sign somewhere.

Does this look firmiliar?

$^nC_k = \frac{n!}{k!(n-k)!}$