Griffiths (both in his intro to QM and intro to Electrodynamics) gives so many problems under the heading "More problems on chapter xx" at the end of each chapter. On going through many school's UG courses and their home assignments, I saw that no one really cares about them. Even in the discussion sections of many schools (where mathematically intimidating and difficult problems are supposed to be solved), generally problems amidst the chapters are taken. A cursory look through these "More problems on chapter xx" revealed that they are not only tedious, but also quite lengthy when one sits down to do it formally. What is then the significance of these problems. Even exam problems are easier then these.
However, I must confess that it does give me a pang of regret to skip so many problems at the end of the chapters, in a way my inner self teases me "you couldn't even do all the problems from Grifftiths and you think you can do Jackson??"
I understand that, there are people here who have done these physics courses formally in a classroom setting, could they clarify the use of these problems and whether is it peremptory to solve them before saying "I did Griffiths QM or EM".