Question

6C3

Answer 1

There's a formula for this:
\[\Huge _nC_r = \frac{n!}{r!(n-r)!}\]

Answer 2

I thought this was a question about carbon.

Answer 3

So just simplify.
\[\Large n!=n\cdot (n-1)\cdot(n-2) \ ... \ \cdot 2\cdot 1\]

Answer 4

thank you! :)