Personal Answer:
I would have to say both but what I will go with is giving the wrong answer in class because say the teacher asks you 4x17 equals what? Say you answer 13 then you get it wrong. Obviously that would be pretty embarrassing but that is what I will go with.
Other Answer:
better (or worse) than is usual or expected: poor nutrition can leave you feeling form or group into a class or cluster: [no object] : the butterflies aggregate in 3 [no object] grow larger or more numerous: the costs mount up when you produce (a play, exhibition, or other artistic event); present for public view or display.
