With that being said, I think there is a difference between girls and guys when it comes to studying. For guys (the ones that I know), likes to be logical and when they study, they go for WHY. Once they understand why the answer is the answer, they are satisfied. And this is a good strategy because most questions on exams are just variations of practice problems or homework questions.

Girls on the other hand tries to cram in as much as they can. You will often see girls in the library taking up a whole table with class notes, course printouts, practice exams.. etc…

If this is you, then it explains why you get the easier questions on the exams correct. The easier questions are most likely the ones that tests your memory to see if you remember something that was said in class or on notes. And because you spend so much time memorizing the answers, you will tend to get those kind of questions correct. However when it comes to questions that tests your core understanding of the material, you might have trouble with.

I think you two should combine your study habits.