UPSC conducts the NDA 2 2026 written exam on 13 September, with Mathematics as Paper 1. The NDA 2 2026 Math Answer Key will help candidates appearing for the Mathematics paper check their responses, estimate marks, and review their performance set-wise.

This page will provide NDA 2 2026 Maths Answer Key PDFs for Set A, Set B, Set C, and Set D, along with the marking scheme and expert paper analysis after the exam.

Your score is equal to = (correct × 2.5) - (wrong × 0.83). Bookmark this page and return after the NDA 2 2026 Mathematics paper. The NDA 2 Maths Answer Key 2026 PDFs for all sets will be added here, along with verified solutions and paper analysis. 

Candidates can use the correct booklet set to compare answers accurately and understand their likely written-exam score clearly.

NDA 2 Maths Answer Key 2026 - Key Details

Everything you need before you open the answer key, in one place. Check the series letter printed on your question booklet cover first; the answers are not interchangeable across sets.

Download NDA 2 2026 Maths Answer Key PDF (Set A, B, C, D)

Locate the question booklet series printed at the top of your NDA 2 2026 Mathematics question paper, then open the matching PDF below.

Each set carries the same questions in a different order, so answers cannot be compared across sets.

To download the Maths answer key from the table above, fill out the enquiry form that appears first.

Checking the GAT paper too? The NDA 2 2026 GAT answer key is published alongside this one.

How to Check NDA 2 2026 Maths Answers Set-Wise

Once the NDA 2 2026 Maths Answer Key is available, make sure you compare your responses with the correct question booklet series.

Steps to Check Your NDA Maths Answers

1. Check the set code printed on your Mathematics question booklet.
2. Download the matching Set A, B, C, or D answer key PDF.
3. Compare each attempted question with the corresponding answer.
4. Count your correct, incorrect, and unattempted responses.
5. Use the NDA 2 2026 Score Calculator to estimate your Mathematics marks.

How to Download the NDA 2 Maths Answer Key 2026 from UPSC?

The Union Public Service Commission publishes its answer key on the official portal days after the exam. Follow these steps once the link is active:

1. Visit upsc.gov.in 
2. Open the Examination tab on the homepage
3. Select Answer Keys from the dropdown menu
4. Click National Defence Academy and Naval Academy Examination (II), 2026
5. Open the Mathematics PDF for your question booklet series
6. Download it and match your recorded responses question by question

Candidates who want a same-day estimate should use the Major Kalshi Classes answer key published on 13 September, then verify it against the official PDF once UPSC uploads it.

How to Calculate Marks Using NDA 2 2026 Maths Answer Key?

The Mathematics paper carries 120 questions for 300 marks. Marks are awarded and deducted as follows:

• +2.5 marks for every correct answer
• −0.83 marks for every incorrect answer
• No deduction for questions left unattempted

NDA Maths Score Calculation Formula

Expected Maths Score = (Correct Answers × 2.5) − (Incorrect Answers × 0.83)

For instance, take a candidate who attempts 100 questions and leaves 20 blank. Of the 100 attempted, 78 are correct, and 22 are wrong.

Those 22 wrong answers cost more than seven questions' worth of marks. This is why guessing beyond an educated elimination rarely pays in the Maths paper.

For faster calculation, use the NDA 2 2026 Score Calculator to enter your correct and incorrect responses and get your expected score instantly.

NDA 2 2026 Maths Paper Analysis - Difficulty and Topic Weightage

Major Kalshi Classes faculty will publish a full Mathematics paper analysis on 13 September, once all four sets have been reviewed. It covers the overall difficulty level, topic-wise question distribution, and how the paper compares with NDA 1 2026.

Overall Difficulty Level

Once the paper concludes, we’ll share whether it was calculation-heavy or concept-heavy, how manageable the 75-seconds-per-question pace was, and how it compared with NDA 1 2026.

Topic-wise Question Distribution

"A tough Maths paper does not hurt you the way candidates fear. It pulls the cut-off down with it. What matters is where you sit against the rest of the paper's takers, not the number you arrive at on your own." - Saurabh Singh, Academic Director, Major Kalshi Classes.

What Is a Good Score in NDA 2 2026 Maths?

UPSC determines the written cut-off based on the combined Maths and GAT scores, with a minimum of 25% required in each paper: 75 marks in Maths and 150 marks in GAT.

• Candidates must clear the minimum qualifying marks in Mathematics independently.
• A strong GAT score does not compensate for falling short of that threshold.
• The written cut-off is decided by UPSC each cycle, based on paper difficulty and vacancies.
• Your Maths score is 300 out of 900, so assess it alongside GAT’s 600 marks, not separately.

Recent NDA written cut-offs have hovered in the 300s out of 900. A Maths score in the 120-140 range has generally left candidates comfortably placed. However, the final figure moves with the paper.

Check the NDA 2 2026 expected cut-off for a fuller picture once the analysis is out.

MKC Answer Key vs UPSC Official Answer Key

Two answer keys matter after the exam, and they serve different purposes. MKC's key gives you a score on exam day. UPSC's provisional key, expected around 16-20 September, is what actually feeds into your result.

Use MKC's key to know where you stand within hours. Use UPSC's to confirm it. For the full timeline covering both papers, see the NDA 2 2026 Answer Key page.

How to Raise an Objection Against the NDA 2 2026 Answer Key?

UPSC allows candidates to formally challenge questions in the provisional answer key through its Online Question Paper Representation Portal (QPRep). 

Based on the NDA 1 2026 cycle, the window opens a couple of days after the key is published and stays open for five days only.

1. Log in to the QPRep portal on upsc.gov.in using your registration credentials
2. Select the NDA (II) 2026 Mathematics paper and your booklet series
3. Choose the question number you are disputing
4. Upload supporting evidence from a credible source, such as NCERT or a standard textbook
5. Submit before the deadline; objections sent by email or post are not accepted

Only UPSC's key can be challenged. If you spot an error in MKC's key, report it to the faculty; corrections are verified and dated on this page.

What to Do After Checking Your NDA 2 2026 Maths Score

• If you are comfortably above the qualifying mark, start SSB preparation now rather than waiting for the written result. The gap between the result and the SSB call-up is shorter than most candidates expect, and psychological tests, GTO tasks and the personal interview cannot be prepared for in a fortnight. MKC's SSB interview training runs through this period for exactly this reason.

• If you are borderline, hold off on any conclusion until you have checked GAT. Maths carries 300 marks against GAT's 600, so a moderate Maths score with a strong GAT paper still clears the written cut-off comfortably. Calculate both together before deciding anything.

• If you have fallen short, the honest answer is that NDA 1 2027 is roughly six months away and the syllabus does not change. Candidates who begin in September, with a full paper's worth of diagnostic data on what went wrong, are in a far stronger position than those starting fresh in January.

How Major Kalshi Classes Supports NDA 2 2026 Aspirants

The answer key on this page is prepared by the same faculty who teach NDA Mathematics at Major Kalshi Classes in Prayagraj, which is why it arrives on exam day rather than a week later.

Beyond the key, aspirants can use:

• Set-wise solutions, not just answers, so a doubtful question can be checked step by step.
• The NDA 2 2026 Score Calculator, applying the official marking scheme across Maths and GAT.
• Live post-exam paper analysis with the Maths faculty on 13 September.
• SSB interview training for candidates moving to the next stage.
• NDA 1 2027 classroom and online batches for those preparing for the next cycle.

Conclusion

The NDA 2 2026 Maths Answer Key gives candidates a quick way to verify responses, calculate expected marks, and understand their performance set-wise. Always use the correct Set A, B, C, or D answer key and later cross-check it with the official UPSC release.

After calculating your Maths score, check your GAT performance and compare your combined marks with the expected cut-off.

Explore MKC’s NDA resources, mock tests, score calculator, and expert counselling to plan your next step with clarity.