About the Book: NDA/NA Solved Papers 2016–2025 is a comprehensive exam preparation guide featuring chapter-wise solved papers for the National Defence Academy and Naval Academy (NDA/NA) entrance examinations from 2016 to 2025. Designed to strengthen Mathematics and General Ability Test (GAT) preparation, the book provides authentic solutions, trend analysis, and exam-oriented practice to help aspirants improve accuracy, speed, and conceptual understanding. Ideal for defence exam candidates, competitive exam preparation, and self-study, this resource supports effective revision and strategic preparation for NDA entrance success.