Mathematics question paper of NDA examination will comprise various sections including Algebra, Matrices, Determinants, Trigonometry, Analytical Geometry of two and three dimensions, Differntial Calculus, Integral Calculus, Vector Algebra, Statitics and Probability.
The General Ability Test paper will have questions from English, General Knowledge sections including Physics, Chemistry, General Science, Social Studies, Geography and Current Events.

Mathematics
The syllabus will be from Class 11 and Class 12 (as per NCERT guidelines).

General Ability Test
You can prepare General Science, Social Science, Economics & English Grammer from NCERt books.You should also have a knowledge of G.K. and Current Affairs on Politics(National and International), Sports, Economics & Statistics.

Good Luck!