Quantitative aptitude is a wonderful skill to test our efficiency and attitude. Learn Quantitative aptitude as puzzle questions with math as skill, please don’t learn as mathematics. Most of the students see quants as a math subject, yes it is a subject but only to test and improve yourselves. If you solve aptitude and reasoning questions regularly you can realize, your laziness would reduce and your thinking skill will improve. In this book I have explained the concepts of aptitude topics with examples and few concepts with diagrams and pictures. I have avoided formulas as much as I can, because I you know concept you can define your own formula. Formula is derived from concept. I have not explained about few topics like mensuration, log etc., because those formulas and explanation can be found in internet lot. You can solve aptitude in many ways. Do not stick to one method, your brain is different from others. Think in your own way, you can solve it much easier. Timing is important to solve, do not take more than a minute to solve a question. I have not given options for example concept questions as your question paper, because if you are good in concept, you will not get confused with options