Welcome to the “Al-Razi Academic Notes on Computer Science & Entrepreneurship” Grade 9. This comprehensive solution book is designed to support students, teachers and parents in navigating the exciting world of Computer Science & Entrepreneurship. It is with great excitement that we present “Al-Razi Academic Notes on Computer Science & Entrepreneurship” a unique blend of two felds that are shaping the future of innovation and business. This book is designed to provide students with a solid foundation in computer science concepts while introducing them to the entrepreneurial mindset necessary to thrive in a rapidly evolving world. By bridging technical knowledge with practical business acumen, this resource aims to equip learners with the tools they need to create, innovate, and lead in the emerging digital economy. We hope this book will not only serve as an academic resource but also as a source of inspiration for students to explore the limitless possibilities at the crossroads of computer science and entrepreneurship. We are deeply grateful to the educators, colleagues, and students whose support and feedback have enriched this endeavour. Suggestions for improvement are always welcome as we strive to make this book even more impactful in future editions. May this book inspire you to think boldly, act creatively, and contribute meaningfully to the world of technology and business!