This book is the best book for the clearing the competitive exam which is based on the aptitude. I have this book& I have a good experience of it, in this book the things are given from the basic level that is easy to understand from the basic, easy to read& no chance of any type of mistake in this book so if any wan to clear or improve their aptitude then they must have to study from this I sure you all also like this book very much, this is a best book for the aptitude .