As I am using this book for solving as much as possible math problem and also preparing for railway exam since 6 month. I like the most about this book is that step by step approach. The feeling which I get after solving a tough arithmetic problem in my school day, I cant imagine.
Although the book looks very simple from its cover but the real magic is inside. I experience so many features in this book which a buyer should know. Like, problem is solved in simple manner and step by step approach. It has 39 chapter. This book is surely recommended for arithmetic portion except Trigonometry, geometry, algebra as it lacks quality question in those chapters.
But I will suggest this book for others chapters. It has the best collection of question.