Um, Is This Correct?
My days of figuring out permutations and combinations are but distant memories. However I looked up the combination equation online and it says that:
n C k = n!/k!(n-k)!
where C indications a combination of n items from which one is choosing k at a time.
So if I had 7 items and was choosing 2 at a time, the number of combinations would be 21, right?
Rusty brain cogs won't let me trust my own answer...