Question

Find C(100, 2)

Answer 1

C(n,k) is the number of combinations of k elements you can make from a set of n elements.

\[C(n,k) = \frac{n!}{k!(n-k)!}\]\[\implies C(100,2) = \frac{100!}{2!(100-2)!} = \frac{100!}{2!\ 98!} = \frac{100\cdot 99}{2}\]

Answer 2

is that the answer?

Answer 3

Well you can certainly simplify it further

Answer 4

can u please give me the final answer plz

Answer 5

Nah. I think I'm good. You can figure it out. Or if you can't, you can ask questions.