NDA Mathematics marks & score calculator
Estimate net marks from your correct and wrong answer counts with default exam marking rules. All parameters are fully editable.
Estimate your score.
Pre-configured for NDA Mathematics. Enter your responses to calculate net marks and penalty deductions.
72 correct · 24 wrong · 24 unattempted
180.00
−20.00
75.00%
80.00%
NDA Mathematics scoring reference
The values below are the tool’s editable practice preset. Exam patterns and marking rules can vary by cycle, paper, and section; use the linked official source to confirm the notice that applies to you.
| Parameter | Page preset | How to use it |
|---|---|---|
| Questions | 120 | Preset count; verify the current paper |
| Correct answer | +2.5 marks | Editable calculator value |
| Wrong answer | −0.8333 marks | Editable calculator value |
| Duration | 150 minutes | Practice timer default |
| Options | 4 | Practice sheet layout |
Open official notification for NDA Mathematics ↗
Score calculation formula
Net score = (correct × 2.5) − (wrong × 0.8333)
Example: 6 correct and 2 wrong yields 13.33 marks before official normalization or section qualifying rules.
Penalty deduction ratio: One-third penalty. View expected value calculations on the One-third penalty calculator →
Practice bubbling answers under timed conditions
Simulate NDA Mathematics with an authentic 120-question OMR sheet and 150-minute countdown.
Expected value when eliminating choices
Expected value = (chance correct × positive marks) − (chance wrong × penalty). Break-even accuracy with these settings is 25.00%.
| Choices left | Chance correct | Expected marks | Estimate |
|---|---|---|---|
| 4 of 4 | 25.0% | +0.00 | Break-even threshold |
| 3 of 4 | 33.3% | +0.28 | Positive expected value |
| 2 of 4 | 50.0% | +0.83 | Positive expected value |
| 1 of 4 | 100.0% | +2.50 | Positive expected value |
This is a mathematical probability estimate under uniform assumption, not official test strategy.
Frequently asked questions
What is the marking scheme and negative marking for NDA Mathematics?
NDA Mathematics awards +2.5 marks for each correct response and deducts −0.8333 marks for each incorrect response. Blank and unattempted questions receive 0 marks.
How is the NDA Mathematics score calculated?
Net Score = (Correct Answers × 2.5) − (Incorrect Answers × 0.8333). For example, 50 correct and 10 incorrect yields 116.67 marks.
How many questions and how much time is allotted in NDA Mathematics?
The paper consists of 120 questions to be answered in 2.5 hours (150 mins). Each question provides 4 options.
Can I practice NDA Mathematics on an interactive OMR sheet online?
Yes. ExamMint provides a free online OMR simulator configured specifically for NDA Mathematics with 120 questions, a countdown timer, and printable A4 PDF sheet support.
Expected value when eliminating choices
Expected value = (chance correct × positive marks) − (chance wrong × penalty). Break-even accuracy with these settings is 25.00%.
| Choices left | Chance correct | Expected marks | Estimate |
|---|---|---|---|
| 4 of 4 | 25.0% | +0.00 | Break-even threshold |
| 3 of 4 | 33.3% | +0.28 | Positive expected value |
| 2 of 4 | 50.0% | +0.83 | Positive expected value |
| 1 of 4 | 100.0% | +2.50 | Positive expected value |
This is a mathematical probability estimate under uniform assumption, not official test strategy.
Frequently asked questions
What is the marking scheme and negative marking for NDA Mathematics?
NDA Mathematics awards +2.5 marks for each correct response and deducts −0.8333 marks for each incorrect response. Blank and unattempted questions receive 0 marks.
How is the NDA Mathematics score calculated?
Net Score = (Correct Answers × 2.5) − (Incorrect Answers × 0.8333). For example, 50 correct and 10 incorrect yields 116.67 marks.
How many questions and how much time is allotted in NDA Mathematics?
The paper consists of 120 questions to be answered in 2.5 hours (150 mins). Each question provides 4 options.
Can I practice NDA Mathematics on an interactive OMR sheet online?
Yes. ExamMint provides a free online OMR simulator configured specifically for NDA Mathematics with 120 questions, a countdown timer, and printable A4 PDF sheet support.