Question

Evaluate C(n, n).

Answer 1

define C

Answer 2

There was nothing for C. Thats what confused me. I thought there had to be something for C?

Answer 3

C can mean a lot of different things. Is this C for combinatorics?

Answer 4

it stands for combination my choices are 0, 1, and n

Answer 5

Ok, well then:

\[C(n,r) = \frac{n!}{r!(n-r)!}\]

So if you plug in n for r, and n for n, what do you get?