Question

Need Help! Its a combination problem.5

Answer 1

I don't think your factorial equation is right... follow this format \[\frac{ n! }{ k! (n-k)! }\]
and try simplifying now

Answer 2

15! / 15! (5-15)!

Answer 3

On my notes it says
nCk = n!/(n-k)! k!
so id rather do it that way :)
but it would still be the same way right?

Answer 4

Wait actually

Answer 5

I wrote the wrong number..
I just need to figure out how to simplify 15C5

Answer 6

its supposed to be 3003 but idk how?
I can do it from a calculator, but on a quiz i need to be able to show my work

Answer 7

You would get 15!/ 15!. -10! that way
and I don't think you should have a negative factorial

Answer 8

I got 15!/10! 5!

Answer 9

yup thats right