Mathematics is one of the most decisive sections in the Railway Recruitment Board (RRB) Group D examination. A strong grip on RRB Group D Maths Questions can significantly boost your overall score and improve your chances of qualifying for the next stage. Unlike subjective subjects, Maths offers guaranteed marks if approached with the right strategy and focused practice. This article provides a comprehensive overview of the important RRB Group D Maths questions, covering topic-wise weightage, frequently asked questions, smart solving techniques, that go beyond basic syllabus explanations.
Why are RRB Group D Maths Questions important?
RRB Group D maths questions are important because they are direct, formula-based questions. This is a high-scoring section in the RRB Group D Exam Pattern. Before diving into the questions, it’s crucial to understand why maths deserves special attention:
- Direct, formula-based questions
- Less time-consuming than reasoning if concepts are clear
- High accuracy is possible with practice
- Repeated question patterns from previous years
What is the topic-wise weightage for RRB Group D Mathematics topics?
The topic-wise weightage for RRB Group D mathematics ranges from 1 to 5 questions as per the topic. Given below are the details:
| Topic | Number of Questions |
| Number System | 4–5 |
| Simplification | 3–4 |
| Percentage | 2–3 |
| Ratio & Proportion | 2 |
| Profit & Loss | 2 |
| Simple & Compound Interest | 1–2 |
| Time & Work | 2 |
| Time, Speed & Distance | 2 |
| Mensuration | 2 |
| Algebra | 1–2 |
| Data Interpretation | 1 |
Sample RRB Group D Maths Questions
We have provided below some sample RRB Group D Maths Questions. Download the free PDF available in this article:
1. If the cost price of 15 articles equals the selling price of 12 articles, find the profit percent.
a) 20%
b) 22%
c) 25%
d) 30%
Answer: c) 25%
2. The ratio of two numbers is 3 : 5 and their LCM is 180. Find the sum of the numbers.
a) 48
b) 60
c) 96
d) 120
Answer: c) 96
3. If 25% of a number is 45, then the number is
a) 160
b) 170
c) 180
d) 190
Answer: c) 180
4. The average of first 20 natural numbers is
a) 10
b) 10.5
c) 11
d) 21
Answer: b) 10.5
5. A train covers a distance of 180 km at a speed of 60 km/h. Time taken is
a) 2 hours
b) 3 hours
c) 4 hours
d) 5 hours
Answer: b) 3 hours
6. The HCF of 306 and 657 is
a) 9
b) 18
c) 27
d) 36
Answer: c) 27
7. Find the simple interest on ₹5000 at 8% per annum for 2 years.
a) ₹700
b) ₹750
c) ₹800
d) ₹850
Answer: c) ₹800
8. If the radius of a circle is 7 cm, then its area is
a) 154 cm²
b) 144 cm²
c) 132 cm²
d) 164 cm²
Answer: a) 154 cm²
9. What is the cube of 8?
a) 256
b) 512
c) 216
d) 64
Answer: b) 512
10. A sum becomes double in 5 years at simple interest. Rate of interest is
a) 10%
b) 15%
c) 20%
d) 25%
Answer: c) 20%
11. If x : y = 4 : 5 and y : z = 10 : 11, then x : z =
a) 8 : 11
b) 4 : 11
c) 5 : 11
d) 40 : 55
Answer: a) 8 : 11
12. The perimeter of a square is 48 cm. Find its area.
a) 144 cm²
b) 169 cm²
c) 156 cm²
d) 196 cm²
Answer: a) 144 cm²
13. 40% of 250 is
a) 90
b) 95
c) 100
d) 110
Answer: c) 100
14. The square root of 144 is
a) 10
b) 11
c) 12
d) 13
Answer: c) 12
15. If the selling price of an article is ₹540 with a profit of 20%, then the cost price is
a) ₹450
b) ₹460
c) ₹480
d) ₹500
Answer: a) ₹450
16. The average of 5 numbers is 28. If one number is excluded, the average becomes 25. The excluded number is
a) 35
b) 38
c) 40
d) 45
Answer: c) 40
17. The value of (12² − 8²) is
a) 64
b) 80
c) 96
d) 128
Answer: b) 80
18. Find the LCM of 12, 18 and 24.
a) 48
b) 72
c) 96
d) 144
Answer: b) 72
19. A man walks at 5 km/h. Time taken to cover 15 km is
a) 2 hours
b) 2.5 hours
c) 3 hours
d) 4 hours
Answer: c) 3 hours
20. The ratio of ages of A and B is 5 : 7. If B is 28 years old, A’s age is
a) 18
b) 20
c) 22
d) 24
Answer: b) 20
21. The sum of first 50 natural numbers is
a) 1225
b) 1250
c) 1275
d) 1300
Answer: a) 1225
22. If the length of a rectangle is 20 cm and breadth is 14 cm, its area is
a) 260 cm²
b) 280 cm²
c) 300 cm²
d) 320 cm²
Answer: b) 280 cm²
23. What is 15% of 360?
a) 48
b) 52
c) 54
d) 60
Answer: c) 54
24. The HCF of 84 and 126 is
a) 14
b) 21
c) 28
d) 42
Answer: b) 21
25. A sum of money becomes ₹2400 in 2 years at 10% simple interest. Find the principal.
a) ₹2000
b) ₹2100
c) ₹2200
d) ₹2300
Answer: a) ₹2000
26. The value of 7³ − 4³ is
a) 279
b) 283
c) 287
d) 291
Answer: c) 287
27. If the cost price is ₹800 and selling price is ₹920, the profit percent is
a) 12%
b) 15%
c) 18%
d) 20%
Answer: b) 15%
28. The square of 25 is
a) 525
b) 600
c) 625
d) 650
Answer: c) 625
29. A train running at 72 km/h crosses a pole in 5 seconds. Length of the train is
a) 90 m
b) 100 m
c) 110 m
d) 120 m
Answer: b) 100 m
30. The average of 10 numbers is 20. If one number is 30, the average of remaining numbers is
a) 18
b) 19
c) 20
d) 21
Answer: b) 19
31. The ratio 2 : 3 is equal to
a) 6 : 9
b) 8 : 10
c) 10 : 12
d) 4 : 5
Answer: a) 6 : 9
32. If 5x = 60, find x.
a) 10
b) 11
c) 12
d) 13
Answer: c) 12
33. The perimeter of a rectangle is 60 cm. If length is 18 cm, breadth is
a) 10 cm
b) 11 cm
c) 12 cm
d) 13 cm
Answer: c) 12 cm
34. What is the value of √196?
a) 12
b) 13
c) 14
d) 15
Answer: c) 14
35. 3/5 of a number is 45. The number is
a) 60
b) 65
c) 70
d) 75
Answer: a) 60
36. Find the LCM of 16 and 24.
a) 32
b) 40
c) 48
d) 56
Answer: c) 48
37. A man completes a work in 12 days. How much work does he do in 1 day?
a) 1/10
b) 1/11
c) 1/12
d) 1/13
Answer: c) 1/12
38. If the radius of a circle is doubled, its area becomes
a) double
b) triple
c) four times
d) eight times
Answer: c) four times
39. What is the percentage of 25 in 200?
a) 10%
b) 12.5%
c) 15%
d) 20%
Answer: b) 12.5%
40. The difference between the square of 9 and square of 5 is
a) 46
b) 48
c) 50
d) 56
Answer: b) 56
41. If SP = CP, then profit or loss is
a) profit
b) loss
c) no profit no loss
d) double profit
Answer: c) no profit no loss
42. The smallest prime number is
a) 0
b) 1
c) 2
d) 3
Answer: c) 2
43. The sum of angles of a triangle is
a) 90°
b) 120°
c) 180°
d) 360°
Answer: c) 180°
44. Convert 0.75 into fraction.
a) 1/2
b) 2/3
c) 3/4
d) 4/5
Answer: c) 3/4
45. If 12 men can do a work in 10 days, how many men are required to do it in 5 days?
a) 20
b) 22
c) 24
d) 26
Answer: c) 24
46. The value of 15² + 5² is
a) 250
b) 260
c) 275
d) 300
Answer: c) 250
47. If the diameter of a circle is 14 cm, radius is
a) 5 cm
b) 6 cm
c) 7 cm
d) 8 cm
Answer: c) 7 cm
48. The cube root of 512 is
a) 6
b) 7
c) 8
d) 9
Answer: c) 8
49. What is the value of (20% of 150)?
a) 25
b) 30
c) 35
d) 40
Answer: b) 30
50. If a = 5 and b = 3, find (a² − b²).
a) 14
b) 15
c) 16
d) 17
Answer: a) 16
Which are the most repeated Mathematics topics in Group D Exam?
The most repeated mathematics topics in the RRB Group D examination include HCF and LCM, Percentage, Simple Interest and more. Check the complete list:
- LCM-HCF-based problems
- Percentage increase/decrease
- Simple interest calculations
- Work efficiency problems
- Train crossing problems
- Area & perimeter of rectangles
How should I prepare for RRB Group D Maths Questions?
To prepare efficiently for the mathematics topics, candidates must revise the basics from the RRB Group D syllabus first. Given below are the details:
- Understand basics first – especially arithmetic topics like number systems, percentages, ratio & proportion, average, time & work, speed & distance. These are the most scoring questions in RRB Group D.
- Use shortcut tricks & mental math to save time during the exam.
- Daily practice of sets and previous questions to improve speed and accuracy
- Mock tests help identify weak areas and track speed improvement over time.
What are the best books for RRB Group D Maths Questions?
The best books to revise for the RRB Group D Maths questions include “Fast Track Objective Arithmetic”, “Quantitative Aptitude for all competitive exams”, and more. The table below shows the details:
| Subject | Name of Book | Publisher |
| Mathematics | Practice Book on Quicker Maths, 2nd Edition | Magical Book Series |
| Quantitative Aptitude for Competitive Examinations, 17th Edition | S. Chand Publisher | |
| Fast Track Objective Arithmetic | Arihant Publishers | |
| Quantitative Aptitude for All Competitive Examinations | McGraw Hill |
FAQs
The RRB Group D exam mainly includes easy to moderate level Maths questions from topics such as Number System, Simplification, Percentage, Ratio & Proportion, Profit & Loss, Time & Work, Time & Distance, Mensuration, Algebra, and Data Interpretation.
The RRB Group D Computer Based Test (CBT) consists of 25 Mathematics questions, each carrying 1 mark, making a total of 25 marks for the Maths section. There is negative marking of 1/3 mark for each incorrect answer.
Among all topics, Number System, Simplification, Percentage, and Time & Work carry the highest weightage in RRB Group D Maths Questions.
While exact questions are rarely repeated, the concepts, formulas, and question patterns are frequently repeated in RRB Group D Maths Questions. Practicing previous year question papers helps candidates identify high-frequency topics and predictable question structures.
To score maximum marks in the Maths section, candidates should:
Focus on concept clarity and formula revision
Practice previous year RRB Group D Maths Questions
Improve calculation speed and accuracy
Avoid blind guessing due to negative marking
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