Radian?s NDA/NA Maths Book. National Defence Academy & Naval Academy Mathematics Fully Solved Guide Book for Entrance Exam 2023 in English. NDA Maths Book includes chapter wise syllabus, Shortcut Methods, Advanced Mathematics, and detailed solution. In this book, the questions are divided chapter-wise with previous year's questions asked in exams and placed in a proper sequence for easy understanding. Comprehensive coverage of NDA/NA syllabus according to the latest UPSC syllabus. This book is written by Hrithik Aggarwal, Grand Son of Dr. R.S. Aggarwal esteemed Mathematician and Author.