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Quantitative aptitude or numerical ability tests are a part of examinations held for the recruitment of officers to banks as well as certain other sectors. This book has basically been designed to help candidates understand the basic concepts of math—or refresh their minds about them—and learn ways to solve problems fast. It is divided into two sections—Learning Curve 1 and Learning Curve 2. LEARNING CURVE 1 consists of several units progressing from the very basic to more advanced topics of mathematics. Each unit deals with a few topics, presenting the concepts and principles and then going on to illustrate their use. Woven into these information units are fast-track formulae (or shortcuts) that are practical and rather essential if the problems are to be solved fast. Their usage is also amply illustrated through worked examples. Each unit also has a number of practice exercises with questions based on the topics covered. Every practice exercise is accompanied by answers and detailed solutions to the questions. Along with conventional solutions, there are shortcuts suggested for most of the questions. It is important to remember that the multiple-choice format allows you to locate the answer without having to solve the sum fully. This book guides the candidates on how to do that—another time management skill. At times, shortcuts are specific to problems; the ability to find the correct one where required is a skill that comes with practice—and that practice is ensured by the large variety and number of questions in this book and the suggested solutions. LEARNING CURVE 2 consists of several test papers set in actual examinations of recent years—bank PO, CDS, NDA-NA, SSC, etc. (Some papers are based on the questions recalled by candidates.) These papers have been fully solved. This section is aimed at giving readers a feel of the examination and the opportunity to assess themselves in terms of both knowledge and time management.