Just found this site, and, gotta say, it's great it's around.
So I'm doing GRE math prep and I ran into something I wanted to ask everyone about:
For a quantitative comparison, there are 4 'answers' - A is bigger, B is bigger, A and B are equal, and not enough info to decide.
The rules for this comparison are x = y =/= 0.
Column A is 0 (zero).
Column B is x / y.
I put "D." If x and y are both positive, the result is positive, so bigger than zero, and if they're both negative, the answer still comes out positive. But if one is negative and one is positive, the result is negative, thus less than zero.
However the prep software said "B" was the right answer, for my first 2 points. They just don't mention the third, that one might be positive and one might be negative.
So... huh? Did I read something wrong about the rule x = y =/= 0?