Problem Plus is for beginners. If you have not finished your NCERT textbooks and a standard book like R.D. Sharma or M.L. Khanna , do not touch Das Gupta. You will get demotivated.

First published decades ago, it has been updated through multiple editions. The core problem set remains relevant because JEE Advanced continues to reward deep, unconventional thinking.

Most JEE Main problems would end at the first or second step; Das Gupta expects you to complete all steps independently.