It is a perfect and excellent book by RS Aggarwal to overcome all the competitive exams. Especially, its very easy to learn aptitude as an beginner.
The specialty about this book is its start with easy solving questions and ends with difficult questions. When we complete all the problems in these book, then we can able to face all the exams and interviews.
Its very interesting to solve the aptitude problems and because of these we can improve our skills easily. I will get bored to solve the aptitude problems, but after solving problems in these book and got interested.In these book train problem, Al ligation and mixture, partnership, Number system, ratio and proportion, permutation and combination, profit and loss, probability, simple interest and compound interest, profit and loss etc., are explained clearly.
Its easy to face the bank exams and railway exams etc., Both government and private exams we can overcome easily. Our speed also gets improved when we follow these book.
I prefer these book to learn aptitude.It is an best ever found book. The problems are solved by an easy and simple manner with simple steps.