It is not easy for a common man to remember everything and have all the knowledge. This book is one of the best book for to remember the things which we have lost from our mind with the growing age. Truly speaking this book is completely exam oriented book that helps lot of aspirants for their exams like SSC, Railways and other govt. exam(Not for UPSC). The content of the book is very helpful.The main thing of this book it has a very few mistake when the rest of other gk books have lot. Main points are highlighted by different colour.