<p>@ SA-07: This brings a question to my mind. How does they know whether the course you take is the hardest ones? For example, pure mathematics is the most difficult class in the view of most students, but it’s the easiest to me. On the contrary, Biology is the easiest course for the others, but I can’t really bear with the long list of biological terms. Please kindly define “hardest” here. Thanks.</p>