This book is a complete guide for Class 9 Mathematics students following the CBSE curriculum. It covers all important topics including Algebra, Geometry, Mensuration, Statistics, Probability, and Coordinate Geometry. Each chapter provides clear theory, solved examples, formulas, and step-by-step solutions to help students understand concepts easily. It also includes NCERT-based questions, additional practice problems, multiple-choice questions, and previous year board questions for thorough exam preparation. Designed for self-study, this book strengthens problem-solving skills, builds strong fundamentals, and helps students achieve high scores in school exams and CBSE board examinations.