APC The New Book of Mathematics Class 9 is a comprehensive reference guide designed for secondary school students preparing for board exams and competitive assessments. This textbook covers all essential mathematical concepts aligned with the CBSE curriculum, featuring clear explanations, worked examples, and practice problems to strengthen problem-solving skills. The book includes chapters on algebra, geometry, trigonometry, statistics, and number systems with step-by-step solutions. Ideal for classroom learning and self-study, it helps students build conceptual clarity and confidence in mathematics. Perfect for Class 9 students, teachers, and parents seeking a reliable study resource.