[ Neither of these sound like any better choice than Sara, if Ventus-san is useless and Lucifer-san has no teaching qualification. Really wishing they could ask their parents right about now. ]

Mm... There was one on fluid dynamics, quadratic time versus linear time, quantum field theory... Are you good at any of these? I'm supposed to do the isomorphism one first, so nobody can beat me to it, but the order doesn't really matter. We just need to solve all seven by the end of the school year.