This book has been designed for the aspirants preparing for NDA/NA exam conducted by the U.P.S.C to recruit candidates for the Indian Army, Indian Navy & Indian Air Force. The book has been divided into two parts namely Mathematics (Paper-I) and General Ability (Paper-II) which includes English and General Knowledge & General Science. Every chapter in this book contains a brief theory followed by concept-based practice questions and solved papers of the exam conducted between 2017-22. We are certain that this book will surely be a valuable resource for all NDA/NA aspirants. Features: Numerous practice questions with rich theoretical concepts Detailed solutions to questions Solved papers of 2017-22 exams