Stupid ones, tbh. We can lose marks for form... can't remember any specific examples atm, but yeah it's stupid. Also, our math tests sometimes involve explanation questions... and I'm not very good at explaining shit, so it's pretty hit and miss there. I dunno, I consider myself a pretty smart guy, and most of my friends are damn smart as well, but our math tests tend to be so comprehensive and the shit we're learning has so many details that it's super easy to screw up and lose a mark for something stupid.