Salient Feature of This Book This book is written strictly according to the latest syllabus prescribed by the council for ICSE examinations for the year 2024 and onwards. The subject material has been treated systematically and presented in a coherent and interesting manner. The theory has been explained in simple language and includes many examples from real life situations. Emphasis has been laid on basic facts, concepts, terms, principles and on the applications of various concepts. Carefully selected examples consist of detailed step-by-step solution. A number of solved examples are included in each section so that students are well prepared to tackle all the problems given in exercises. Each chapter is followed by a chapter Test which includes problems related to all the topics, so that students have total understanding of these topics before going on to next chapter. An attempt has been made to make the book user friendly-matter is well spaced out and given in a bigger type size. Also, the matter has been broken into sections and subsections so that students can learn at their own pace. Each chapter contains an exercise on Multiple Choice Questions which have been framed in a manner such that they holistically cover all the concepts included in the chapter. The exercises are liberally sprinkled with questions from ICSE examination papers so that the students get familiarity with the types of questions to be found in the examination. This book is sufficient to help the students score cent-percent marks in ICSE examination and also builds a strong foundation for success in any competitive examination.