A comprehensive textbook in accordance with the latest syllabus for ICSE examinations with simple language and precise content for easy and quick understanding of the concepts. Includes questions with their solutions under the head? Brain Teasers (Output Questions)? at the end of each chapter for quick revision. Having previous years? ICSE board examinations questions and some important questions with their solutions after the theory part of each chapter under the head? Lets Code? Includes model papers (solved and unsolved) to help the students to prepare for the Board examinations. Also, includes multiple choice questions at the end of the book to enhance the IQ level of the students.