Preparing for the NDA (National Defence Academy) exam involves rigorous study of Mathematics and General Ability Test (GAT). Mathematics covers topics like algebra, trigonometry, geometry, and calculus, focusing on practical applications. The GAT section tests English proficiency, general knowledge, physics, chemistry, history, geography, and current affairs. Candidates must develop strong analytical skills, time management, and problem-solving abilities. Physical fitness and mental agility are equally crucial, as the exam is followed by rigorous physical and psychological tests during SSB (Services Selection Board) interviews. Preparation includes solving previous year's papers, mock tests, and maintaining a disciplined study routine to ensure readiness for the NDA exam and subsequent military training.