A and B are integers. Is [A+B]! even?
(1) A is even
(2) B is even
I've seen this [ xxx ] before on this board, but I have no idea what it means. I've seen people call it "mod xxx". Is that right? What is it? Is it supposed to be absolute value?
Sorry for not knowing - I just am unsure.
If it's absolute value, then I guess I think we just need to make sure that the numbers don't come out to 1 or 0. And even together we can plug in something like 2 and -2, which are both even, but together make 0. And 0! is 1, which is odd.
So I'm going with E.