Question

9C3 over 11C3 Please help. I can't figure this out.

Answer 1

So in this expression, if C3 one term or are they seperate?

Answer 2

It's a little 9 C and a little 3 over a little 11 C and a little 3

Answer 3

so exponents?

Answer 4

Yes.

Answer 5

a quick way to do them is
9*8*7
---- = 9C3
3*2*1

Answer 6

oh if they are exponents forget the above!

Answer 7

Ok.

Answer 8

the way they are written could mean 9C3 is the number of combinations taken 3 at a time of 9 items

Answer 9

How do I do the math?