This book by GK Publications is a vital resource for the aspirants preparing for UPSC?s Combined Defence Services Exam, 2020. In this book, you will find a brief theory for every chapter followed by concept based practice questions. There are 3 sections namely English, General Knowledge and Elementary Mathematics, which are divided further into various topics ? covering the syllabus in detail. The chapters stick to the syllabus prescribed by UPSC and the questions are prepared by experts. This book also consists of solved papers from the year 2017 to 2019. This book will perform as a valuable asset for all CDS aspirants. Features: - ? Comprehensive theory followed by a rich set of questions - ? In coherence with prescribed syllabus ? Chapter-wise segmentation of sections of English, General Knowledge and Elementary Mathematics ? ? Includes fully solved papers of 2017-19.