To solve the problem by regarding it as a challenge Many a time I often meet with diffcult problems from all kinds of courses. What should I do now? To quite or beat them totally? I'd rather to choose the last one--- to take them as challenges. In my mind, If you acculated so many questions and don't solve them, sooner or later you'll fail in tests because of your lack of knowlwdge. Futhermore, if you know how to deal with a typical problem, it will be very easy for you to gain the rules of solving problems of such a kind, and the more problems you've met and solved, the more experiences you'll get.