surprise (even surpriseS)

Today, I started and finished problem Set #3. It was not hard, surprisingly, I spent just an hour and half (in comparison: I spent 2-3 hours for PS#1 and PS#2). I looked at my mark of Term test 1 on CDF and I am happy( >90%). It is unbelievable for me (I usually get 60-80%), and this fact gives me more faith, that I can pass this course with good grade without opening the book. Lectures and working out the problems on my own gives (until now, at least) enough ground to do pretty well in course.