NDA Written Exam: Maths vs GAT Weightage and Preparation Plan.
Every year, we meet aspirants who, without ever checking a single official document, have a preconceived notion that Mathematics is “the toughest part” of the NDA exam and GAT is “just general knowledge, can be managed later.” If you follow them mindlessly, both assumptions can be fatal to your attempt. Mathematics is not harder; it is just more unforgiving of shortcuts. GAT is not something you “manage later.” Between the two, GAT actually carries more marks, more subjects, and, if you are being honest about it, more places to lose your chances quietly without even realising it.
Before we get into strategy, let us get the NDA written exam pattern straight, because many aspirants start preparing before they have even looked at the structure they are preparing for.
Decoded Syllabus of NDA Written Exam: A Step-by-Step Breakdown for Aspirants
The written exam has two papers, held on the same day.
Paper I: Mathematics: 300 marks, 120 questions, 2.5 hours. Every wrong answer costs you 0.83 marks.
Paper II: General Ability Test (GAT): 600 marks, 150 questions, 2.5 hours. Every wrong answer costs you 1.33 marks.
If you do the Math, the written exam totals 900 marks, and the SSB Interview carries 900 marks. Selection is based on both stages combined, not the written exam alone, but to qualify for the SSB round, you must clear the written obstacle.
Notice something in those numbers. GAT is worth exactly double what Mathematics is worth. Still, in our experience at C D Deshmukh Institute, most beginner-level aspirants spend nearly all their preparation hours on Mathematics and treat GAT as something that will just “sort itself out” through general reading. This imbalance is exactly what quietly causes marks to go missing.
Real NDA Subject Weightage: What one should prioritise.
Mathematics feels harder because of the technicality involved in it; you either solve a problem correctly, or you don’t, and there is no partial credit for “sort of knowing” a formula. GAT feels easier because much of it is known to us already: English, Physics, Chemistry, History, Geography, Current Affairs. Familiar subjects create false confidence, which can be fatal.
But familiarity doesn’t mean preparation, and many aspirants miss the thin line between the two. GAT’s 600 marks are spread across two parts: Part A is English (comprehension, grammar, vocabulary, cohesion), and Part B is General Knowledge, covering Physics, Chemistry, General Science, History, Geography, and Current Events essentially the breadth of your Class 9 to 12 syllabus, tested for recall speed, not depth of understanding. That breadth is precisely why aspirants who don’t structure their GAT preparation properly end up losing marks across six or seven different subjects, a few marks here and a few there, until it adds up to something significant.
The NDA Maths Syllabus: Where the Marks Actually Come From
The Mathematics paper draws from Class 11 and 12 level concepts: Algebra, Trigonometry, Calculus, Matrices and Determinants, Integration, Derivatives, Integral Calculus and Differential Equations, Analytical Geometry of Two and Three Dimensions, and Statistics and Probability.
A part that matters more than the syllabus list itself: the level of difficulty isn’t the challenge in NDA Mathematics. Most questions are conceptually straightforward if you have genuinely understood and thoroughly gone through the Class 11-12 NCERT content. The real challenge is speed. You have 120 questions in 150 minutes, which is roughly 75 seconds per question, and that number gets tighter the moment you hit a question that needs more thought. Aspirants who prepare by solving problems slowly, with plenty of time and no pressure, are training for a different exam than the one they’ll actually sit for.
Our advice, based on what has worked for successful candidates from this institute: once you have conceptual clarity on a topic, start with Active Recall sessions. Start timing yourself immediately and do more active revision instead of rereading and memorising. Speed is a skill you build through repetition under pressure, not something that appears naturally on exam day just because you understood the concept.
The NDA GAT Syllabus: Breadth Beats Depth Here
Unlike Mathematics, where depth of understanding carries you through, GAT rewards breadth and quick recall. You’re not being asked to analyse a historical event in depth; you are being asked whether you remember it at all, quickly, under a ticking clock.
A practical way to approach the GAT syllabus:
- English: Focus on grammar rules, vocabulary building, and comprehension speed. This is the most trainable part of the GAT because, unlike General Knowledge, English rewards a fixed, learnable rule set.
- Physics and Chemistry: Focus on NCERT-level Class 9-10 concepts. NDA does not test advanced science; it tests whether you understand foundational concepts and can recall them quickly.
- History and Geography: Build a simple, repeatable revision cycle using short notes rather than full textbooks. You are not writing an essay in this exam; you are recognising the correct option among four.
- Current Affairs: This is the one area that keeps moving, and that is exactly why waiting until “later” to start is a mistake. Build a habit of daily newspaper reading or a reliable current affairs digest from the start of your preparation, not the final month.
A Preparation Plan That Actually Reflects the Weightage
Given that GAT is worth double the marks of Mathematics, your weekly study hours should reflect that, not mirror the disproportionate attention Mathematics usually gets out of habit.
A structure that has worked for aspirants at our institute:
Daily: One dedicated Mathematics practice session (concept plus timed problem-solving) and one GAT session, alternating between English and General Knowledge topics on different days. Solving DPPs (Daily Practice Papers) works wonders and supports effective Active Recall.
Weekly: At least one full-length timed mock test alternating between a Mathematics-only paper and a full GAT paper so that you are building both accuracy and pacing under real exam conditions, not just topic familiarity. This will definitely help to overcome the Doomsday anxiety.
Current Affairs: A short, consistent daily habit rather than a last-month cramming exercise. This is genuinely one of the easiest places to gain marks, and one of the easiest to lose them through neglect.
Revision: Build short, personal notes for GAT topics as you go, so your final month is spent revising your own condensed material, not re-reading full chapters under time pressure you don’t have.
The single biggest mindset shift we ask aspirants to make: stop treating Mathematics as the “real” preparation and GAT as background noise. Treat both as full subjects with their own syllabus, their own pacing demands, and their own weightage in your final score because that’s exactly how UPSC treats them.
Preparing With the Right Mentors.
The NDA written exam rewards disciplined and structured preparation far more than raw talent, and that discipline is genuinely difficult to build alone, especially when balancing school, coaching, and a huge gamut of the GAT syllabus at the same time.
This is exactly the gap structured guidance closes. For aspirants exploring NDA classes in Thane, C D Deshmukh Institute has spent years helping candidates build exactly the kind of balanced, weightage-aware preparation plan this exam actually demands not a generic study schedule copied from a coaching pamphlet. Still, one built around how marks are genuinely won and lost in this specific exam.
Understand the syllabus properly, respect the weightage rather than your instincts about which subject “feels” harder, and build your preparation plan around both papers equally. That is the difference between an aspirant who clears the written exam comfortably and one who is left wondering, after results day, where exactly those missing marks went.
