<p>If some of the hardest math questions keep giving me problems, should I continue taking CB tests or should I go back and actually try to learn some of the more hard concepts? I worked through Gruber's and had little to no difficulty, but keep getting stuck on the last part of the math section! Where would be a good place to learn these concepts? Thanks!</p>
<p>If you don’t know the concepts, learn them. If you aren’t learning by trying the problems, then you need an explanation.</p>