Every year, thousands of young men and women, eager to join the Indian Armed Forces, appear for the Combined Defence Services (CDS) Examination conducted twice a year by the Union Public Service Commission (UPSC) for recruitment of officers into the Indian Military Academy (IMA), Officers Training Academy (OTA), Indian Naval Academy (INA) and Air Force Academy (AFA). To get through this prestigious, yet challenging examination, one needs to follow a methodical approach towards study of three subjects—English, General Knowledge and Mathematics, as provided in this book, theatest in Rupa’s Exam Champion Series. Created by the experienced faculty and subject experts at Adda 247, this book contains 20 UPSC CDS General Knowledge previous years (2010–2020) solved multiple choice questions arranged by subject, ranging from history and the sciences to geography, Indian Polity and current affairs. Twenty previous years’ question papers are provided for Elementary Mathematics and English, each arranged by topic. Additionally, there are practice questions arranged by subject as well as six invaluable practice mock papers. There are more than 10,000 questions with detailed solutions. Dedicated study of this book will enable students to understand concepts, question styles, the new pattern of questions as well as boost speed and accuracy to maximize scores.