Quantitative aptitude is a subject which now comes in almost every competitive exam, be it GATE, CAT, SSC, CDS, Bank Exams or any public service recruitment exam. There are lots of book available for Quantitative aptitude below are some of the best books.
1. Quantitative aptitude by R.S Agarwal
This is no doubt the most popular book, the book covers almost all concepts related to quantitative aptitude in detail. The quantity of questions in this book is quite high, but there are too many questions of similar kind, it feels like same questions are repeated with different numerical values. It also lacks shortcut methods of solving questions. This is a good book if you are beginning with aptitude.
2. How To Prepare For Quantitative Aptitude For The CAT by Arun Sharma
This is a very popular book among the CAT aspirants, even if you are not going to appear for CAT I suggest you to read this book. It has several short cut tricks that help solve the problems quickly.The exercise questions are also divided into three difficulty levels. If you are not a CAT aspirant then the first two levels are sufficient for you, for any exam other than CAT.
3. Quantitative Aptitude For Competitive Examinations by Abhijit Guha
This is a good book for building concepts of quantitative aptitude, it is useful both for beginners and also for those who want to brush up their skills in gaining speed and accuracy. The theory is provided in more detail comparing to other books. The new edition of this book contains 22 original test papers of various exams.
4. Quantitative Aptitude and Reasoning, Second Edition by Praveen published by PHI Learning Pvt. Ltd. —— covers Quantitative Aptitude, Verbal and Non-verbal Reasoning in a single volume
The main objective of this volume is to guide the students to solve the problems within the stipulated time and that too with the higher degree of accuracy.Organized in two parts—Quantitative Aptitude (Part I) and Reasoning (Part II)—it helps students to apply basic mathematical and reasoning concepts to a range of quantitative and reasoning problems. The separate sections are devoted to verbal and nonverbal reasoning. It sharpens the ability to apply analytical and logical thinking while gathering and analysing information, designing and testing solutions to problems, and formulating plans. This book is a valuable resource for conducting training programmes/workshops to train students in problem solving techniques in Mathematical Aptitude. It would equally be useful to the candidates appearing for quantitative aptitude and reasoning test conducted in various competitive examinations.