In how many ways can a club with 9 members choose a two-member sub-committee? Work please!! This is a combination.

Question

anonymous · Answer

its 9C2

hero · Answer

I thought @samjordon was going to give an explanation along with giving an answer, but I guess not.

anonymous · Answer

9!/(2!(9-2)!)

hero · Answer

I guess that is your idea of an explanation.

anonymous · Answer

it's just a basic probability formula for choosing n objects out of total k objects

anonymous · Answer

so whats the answer?

hero · Answer

Well, as far as an explanation, that's a start, but you didn't even give a general formula.

anonymous · Answer

whats the answer

hero · Answer

@raleung2 , what's sad is an answer was given, but even sadder that you didn't recognize it.

anonymous · Answer

9C2? whats that?

anonymous · Answer

what is the c?

hero · Answer

This is proof that giving answers alone is not helpful.

anonymous · Answer

Hero is stuck up and a snob

hero · Answer

No, that's not it. I just don't like when people give answers without explanations.

hero · Answer

Especially when it is stated directly in the CoC exactly what not to do.