The handbook of Mathematics has been designed for the students studying in Class XI - XII to act as the revision cum Quick Study Resource for various concepts of Mathematics. This handbook is a multipurpose quick revision resource with unique format which displays concepts clearly, places them in context and crisply identifies and describes all the factors involved. This handbook has been divided into 40 chapters namely Sets, Relations & Binary Operations, Complex Numbers, Quadratic Equations & Inequalities, Sequences & Series, Permutations & Combinations, Binomial Theorem & Mathematical Induction, Matrices, Determinant, Probability, Trigonometric Ratios & Identities, Inverse Trigonometric Functions, Solution of Triangles, Heights & Distances, Rectangular Axis & Straight Lines, Circles, Parabola, Ellipse, Hyperbola, Functions, Limits, Continuity & Differentiability, Derivatives, Applications of Derivatives, Indefinite Integrals, Definite Integrals, Applications of Integration, Differential Equations, Vectors, Three Dimensional Geometry, Statistics, Mathematical Reasoning & Boolean Algebra, Numerical Method, Linear Programming Problem, Computing, Group Theory, Elementary Arithmetic-I, Elementary Arithmetic-II, Percentage & Its Applications, Elementary Algebra, Logarithm, Geometry and Mensuration. The study material of the book has been prepared in the form of compendium, consisting of all important topics, such as concepts, definitions, principles and procedures; well illustrated with examples and diagrams. In the nutshell, this book can be used as a compact and portable reference book for study purpose and for general reference. Due to its simple information and lucid language it can also be used for general reference. This book will prove to be highly useful for aspirants preparing for competitive examinations like CET-BBA, JEE Main & Advanced, CS, etc.