The book contains both questions as well as detailed descriptions of the answers, so you know what is right and why it is right. The book presents various concepts in an easy-to-grasp and to-the-point manner. Apart from the standard formulae and definitions, the new edition contains tips and tricks that aid a quick revision.Apart from a detailed explanation of basic concepts and theories, the book provides valuable insight in the form of short-cut methods, which can help you deduce the answers to complicated questions in the shortest time span. The author shows that the right approach can yield good results in competitive examinations. The book contains over 4000 multiple choice questions for practice that are designed in various difficulty levels to keep you on the edge. Whether it is about finding the LCM or HCF of numbers, square roots, Linear Equations, Permutations and Combinations, Simple interest and Compound interest, this guide can assist you.