The RRB NTPC marks calculator counts 1 mark for every right answer and deducts one third of a mark for every wrong answer, so 77 right and 11 wrong in CBT 1 give about 73.33 out of 100. Questions left blank score 0. The same rule applies in CBT 2, which has 120 questions instead of 100.
NTPC is held for both undergraduate posts (twelfth pass) and graduate posts, and the paper pattern is the same for both levels. CBT 1 only screens candidates for CBT 2, and CBT 2 is followed by a typing test or an aptitude test depending on the post. The Railway Recruitment Board fixes the final normalised marks.
At a glance
Scoring
+1 per right answer, -1/3 per wrong answer, 0 if blankCBT 1
100 questions, 100 marks, 90 minutesCBT 2
120 questions, 120 marks, 90 minutesLevels
Same pattern for undergraduate and graduate postsCBT 1 role
Screening only, to shortlist for CBT 2Official source
The CEN notice on your RRB regional website
NTPC score = right - wrong / 3
Right and wrong are the counts from your response sheet. Three wrong answers cancel exactly one right answer.
Inputs for the RRB NTPC marks calculator
The tool opens on CBT 1, with three subjects: General Awareness (40 questions), Mathematics (30) and Reasoning (30). Against each, write your right count and your wrong count. For an ntpc cbt 2 marks calculator, change the questions to 50, 35 and 35. The result panel shows the score of each subject, the total and how many marks the wrong answers cost you.
The answer key page of RRB shows your chosen option and the correct one side by side. Compare the two for every question and keep a running tally. In the end you need just two counts per subject.
- Open the RRB answer key link on your regional RRB website and sign in.
- Go through each question and mark whether your answer agrees with the key.
- Add up right and wrong answers for General Awareness, Mathematics and Reasoning.
- Type them in the calculator above, with CBT 1 or CBT 2 question counts.
- Read your raw score and compare it with the cut off for your zone.
CBT 1 and CBT 2 pattern
| Subject | CBT 1 questions | CBT 2 questions |
|---|---|---|
| General Awareness | 40 | 50 |
| Mathematics | 30 | 35 |
| General Intelligence and Reasoning | 30 | 35 |
| Total questions and marks | 100 | 120 |
| Time | 90 minutes | 90 minutes |
Each question carries 1 mark, and a wrong attempt costs one third. PwBD candidates who use a scribe get 120 minutes. This table works for the rrb ntpc graduate marks calculator and the rrb ntpc undergraduate marks calculator alike, since both levels share it.
CBT 1 example with fractions
General Awareness: 28 right, 6 wrong. 28 - 6/3 = 28 - 2 = 26
Mathematics: 24 right, 3 wrong. 24 - 1 = 23
Reasoning: 25 right, 2 wrong. 25 - 0.67 = 24.33
Total: 26 + 23 + 24.33 = 73.33 out of 100. Check: 77 right minus 11/3 (3.67) equals 73.33.
Because one third is a repeating decimal, your total will often end in .33 or .67. Round only at the end. If you round each subject first, small errors can add up to a third of a mark.
RRB NTPC CBT 2 marks calculator example
General Awareness (50): 34 right, 9 wrong. 34 - 3 = 31
Mathematics (35): 28 right, 3 wrong. 28 - 1 = 27
Reasoning (35): 28 right, 3 wrong. 28 - 1 = 27
Total: 31 + 27 + 27 = 85 out of 120. Check: 90 right minus 15/3 (5) is 85.
The same calculation serves as an ntpc ug cbt 2 marks calculator and a graduate level one. After CBT 2, a typing skill test or CBAT may follow for some posts, and those are qualifying.
How many marks do wrong answers cost
| Wrong answers | Deduction |
|---|---|
| 3 | 1 |
| 5 | 1.67 |
| 6 | 2 |
| 9 | 3 |
| 10 | 3.33 |
| 12 | 4 |
| 15 | 5 |
| 18 | 6 |
| 20 | 6.67 |
| 24 | 8 |
| 30 | 10 |
With four options, a blind guess lands on the key about 25 percent of the time. Across many such guesses the gain and the one third penalty roughly cancel, so they add almost nothing. Once two choices are eliminated, a guess starts to pay on average.
Normalisation across RRB shifts
NTPC runs for many days, so RRB normalises raw marks to balance easy and hard shifts. In general terms, each shift's scores are placed on a common base using the spread of marks among its top scorers and its average candidates. The exact formula is set out in the CEN, and we could not confirm the current version, so read the notice for the details.
For this reason an rrb ntpc normalization marks calculator cannot be exact. Your raw score from the tool is precise for your key, and RRB publishes normalised marks with the result. The cut off calculator shows the gap between your score and an older cut off, as a rough guide only.
Mistakes while checking the NTPC answer key
| Common slip | Result | Better practice |
|---|---|---|
| Taking 0.25 off per wrong answer | Score looks higher than it is | Use one third, about 0.33 |
| Using CBT 1 numbers for CBT 2 | Wrong maximum and subject split | Set 50, 35, 35 for CBT 2 |
| Rounding each subject first | Totals drift by up to a third of a mark | Round once, at the end |
| Treating CBT 1 marks as final | CBT 1 only shortlists | Focus on the CBT 2 score for merit |
Other exam calculators
Railway Level 1 candidates can try the Group D marks tool, which also uses minus one third. Many NTPC aspirants also write SSC papers: the CGL calculator covers graduate posts, and the SSC exam comparison lists every SSC scheme. For any paper with an unusual scheme, the custom negative marking tool lets you set the marks. Read the official CEN on the RRB Secunderabad website.
Questions students ask
How is the RRB NTPC answer key marks calculator rule applied?
Each right answer earns 1 mark and each wrong answer loses one third of a mark. Blank questions score 0. Add the subjects to get your total out of 100 for CBT 1 or 120 for CBT 2.
Is the NTPC UG marks calculator different from the graduate one?
No. Undergraduate and graduate level NTPC exams use the same pattern: 100 questions in CBT 1 and 120 in CBT 2, with the same one third penalty.
What changes in an ntpc cbt 2 marks calculator?
Only the question counts. CBT 2 has 50 General Awareness, 35 Mathematics and 35 Reasoning questions, so the maximum is 120.
Does CBT 1 count in the final NTPC merit?
CBT 1 is for screening only. It decides who goes to CBT 2. Check the CEN of your recruitment for how the later stages count.
Why does my NTPC score end in .33 or .67?
Because each wrong answer removes one third of a mark. Unless your wrong answers are a multiple of 3, your score will have a fraction.
Can I find normalised NTPC marks with a calculator?
Not exactly. RRB normalises using the marks of all candidates in each shift. Your raw score is a good guide until RRB releases the normalised marks.