This book is meticulously organized to cater to the needs of students at various levels of understanding. Each paper included in this compilation is carefully selected from different years to represent a broad spectrum of topics covered in the MCS-211 syllabus. The problems range from basic algorithmic challenges to more complex scenarios that test a student’s ability to design efficient and effective algorithms. By attempting these unsolved papers, students will not only reinforce their theoretical knowledge but also gain hands-on experience in tackling real-world algorithmic problems.In addition to serving as an academic resource, this book is also intended to instill confidence in students as they prepare for their examinations. The exposure to a variety of problems will familiarize students with the types of questions that are likely to appear in exams, enabling them to approach their studies with a strategic mindset. This book encourages a deeper exploration of the subject, prompting students to engage with the material beyond the standard textbook content and to think critically about the design and analysis of algorithms.