Mathematics Topics & Question Types (RRB Group D)

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✅ Mathematics Topics & Question Types (RRB Group D) – 100 Questions with Answers

  1. Q: 24 ÷ (4 × 2) + 3 = ?
    ✅ Answer: 6
  2. Q: What is 20% of 250?
    ✅ Answer: 50
  3. Q: If CP = ₹200, SP = ₹250, find the profit percent.
    ✅ Answer: 25%
  4. Q: A car covers 180 km in 3 hours. Find its speed.
    ✅ Answer: 60 km/hr
  5. Q: A can do a job in 6 days, B in 12 days. Together?
    ✅ Answer: 4 days
  6. Q: Simple interest on ₹1000 for 2 years at 5%?
    ✅ Answer: ₹100
  7. Q: Ratio of boys to girls is 3:2. Boys = 30. Girls = ?
    ✅ Answer: 20
  8. Q: Average of 5, 10, 15, and 20?
    ✅ Answer: 12.5
  9. Q: Find LCM of 6 and 8.
    ✅ Answer: 24
  10. Q: Area of rectangle: length = 10cm, width = 5cm?
    ✅ Answer: 50 cm²
  11. Q: If x + 3 = 8, what is x?
    ✅ Answer: 5



RRB Group D Mathematics Topics & Question Types

📘 Mathematics Topics & Question Types (RRB Group D)

Below is a comprehensive list of Mathematics topics along with the common question types asked in the RRB Group D exam:

1. Number System

  • Basic operations (addition, subtraction, multiplication, division)
  • Place value and face value
  • Divisibility rules
  • Remainders
  • Types of numbers (Prime, Composite, Even, Odd, etc.)

2. HCF & LCM

  • HCF and LCM of two or more numbers
  • Word problems involving HCF & LCM
  • HCF/LCM using prime factorization

3. Simplification

  • BODMAS rule
  • Fractions & decimals
  • Square roots & cube roots
  • Surds and indices

4. Ratio and Proportion

  • Simple & compound ratios
  • Direct and inverse proportion
  • Word problems

5. Percentages

  • Conversion between fractions and percentages
  • Profit and loss
  • Discount
  • Simple interest based on percentages

6. Time & Work

  • Work done = Efficiency × Time
  • Work and wages
  • Pipes and cisterns

7. Time, Speed & Distance

  • Speed = Distance / Time
  • Relative speed
  • Trains, boats & streams problems

8. Simple & Compound Interest

  • SI = (P × R × T) / 100
  • CI formulas and compoundings
  • Difference between SI and CI

9. Algebra

  • Linear equations in one variable
  • Simple factorization
  • Algebraic identities

10. Geometry & Mensuration

  • Perimeter and area of basic shapes (square, rectangle, triangle, circle)
  • Volume and surface area of 3D figures (cube, cuboid, cylinder, cone, sphere)

11. Data Interpretation

  • Bar graphs
  • Pie charts
  • Tables and line graphs
  • Questions based on interpretation of given data

12. Averages

  • Average of numbers
  • Weighted average
  • Word problems

13. Profit, Loss & Discount

  • Profit % and Loss %
  • Marked price, cost price, selling price
  • Successive discounts

14. Age Problems

  • Present, past, and future age
  • Age ratio-based questions
  • Age difference/relationship problems

15. Statistics

  • Mean, Median, Mode
  • Frequency distribution basics

Want Practice Sets or PDFs? Comment below and we’ll add downloadable resources for each topic!

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