RRB Group D Mock Test 2026: Maths Practice Set with Solutions & Shortcuts

RRB Group D mock test is no longer just a preparation tool—it is a necessity. With lakhs of candidates competing for a limited number of vacancies, the difference between selection and elimination often comes down to how well you have practiced under simulated exam conditions.

Mathematics is the most scoring yet time-sensitive section in the RRB Group D CBT exam. A well-structured RRB Group D mock test helps you master calculation speed, identify weak topics, and build the stamina required to tackle 100 questions across four sections.

This article provides a high-quality RRB Group D mock test focused entirely on Mathematics. Each question is crafted to mirror the difficulty level and pattern of recent Railway exams. Let’s begin.

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Why Every Aspirant Needs an RRB Group D Mock Test

Before attempting the questions, understand why a dedicated RRB Group D mock test is critical for your preparation:

Benefit	Impact
Real Exam Simulation	Familiarizes you with CBT interface, time pressure, and question difficulty
Speed Development	Helps you achieve the ideal 45-60 seconds per Maths question
Error Analysis	Reveals patterns in silly mistakes and conceptual gaps
Stamina Building	Trains your mind to stay focused for the full 90-minute duration

A single RRB Group D mock test can teach you more about your preparation than weeks of passive study.

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RRB Group D Mock Test: Maths Section (Set 1)

Instructions:

• Total Questions: 25
• Time Allotted: 25 minutes (aim for 20 minutes)
• Marking Scheme: +1 mark for correct, -1/3 mark for incorrect
• Difficulty: Moderate to Difficult (aligned with recent RRB trends)

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Section 1: Number System & Simplification

1. Simplify: $48÷12\times 4+6-3\times 2$48÷12×4+6−3×2
a) 12
b) 14
c) 16
d) 18

2. Find the least number which when divided by 16, 24, and 36 leaves a remainder 8 in each case.
a) 144
b) 152
c) 148
d) 156

3. What is the unit digit of $7^{345}\times 3^{123}$7345×3123?
a) 1
b) 3
c) 7
d) 9

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Section 2: Ratio, Proportion & Partnership RRB Group D Mock Test

4. The ratio of incomes of A and B is 3:4 and the ratio of their expenditures is 2:3. If each saves ₹4000, find the income of A.
a) ₹8000
b) ₹10000
c) ₹12000
d) ₹15000

5. A, B, and C start a business with investments in the ratio 4:5:6. After 4 months, A doubles his investment. At the end of the year, the total profit is ₹1,32,000. Find A’s share.
a) ₹48,000
b) ₹52,000
c) ₹56,000
d) ₹60,000

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Section 3: Speed, Distance & Time RRB Group D Mock Test

6. A train crosses a pole in 8 seconds and a 200 m long bridge in 24 seconds. What is the length of the train?
a) 80 m
b) 100 m
c) 120 m
d) 150 m

7. A man covers a certain distance at a speed of 40 km/h and returns at 60 km/h. Find his average speed for the entire journey.
a) 48 km/h
b) 50 km/h
c) 52 km/h
d) 54 km/h

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Section 4: Simple & Compound Interest

8. At what rate percent per annum will a sum of money triple itself in 10 years at simple interest?
a) 10%
b) 15%
c) 20%
d) 25%

9. The difference between compound interest and simple interest on a sum for 2 years at 8% per annum is ₹64. Find the sum.
a) ₹8,000
b) ₹10,000
c) ₹12,000
d) ₹15,000

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Section 5: Algebra & Linear Equations RRB Group D Mock Test

10. If $a+b=12$a+b=12 and $ab=35$ab=35, find the value of $a^2+b^2$a2+b2.
a) 74
b) 84
c) 94
d) 104

11. The present ages of father and son are in the ratio 5:2. After 5 years, the ratio becomes 3:2. Find the son’s present age.
a) 10 years
b) 12 years
c) 15 years
d) 18 years

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Section 6: Geometry & Mensuration RRB Group D Mock Test

12. The length of a rectangle is increased by 20% and breadth is decreased by 10%. Find the percentage change in area.
a) 8% increase
b) 8% decrease
c) 10% increase
d) 10% decrease

13. Find the area of a rhombus whose diagonals are 24 cm and 10 cm.
a) 120 cm²
b) 240 cm²
c) 60 cm²
d) 100 cm²

14. A cone has a base radius of 7 cm and height of 24 cm. Find its slant height.
a) 20 cm
b) 25 cm
c) 30 cm
d) 35 cm

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Section 7: Profit, Loss & Discount RRB Group D Mock Test

15. A shopkeeper sells an item at a 10% loss. If he sells it for ₹90 more, he gains 5%. Find the cost price.
a) ₹500
b) ₹600
c) ₹700
d) ₹800

16. A trader marks his goods 30% above cost price and allows a discount of 10%. Find his profit percentage.
a) 15%
b) 17%
c) 19%
d) 20%

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Section 8: Averages & Data Interpretation

17. The average of 12 numbers is 25. If two numbers 28 and 32 are removed, find the new average.
a) 24
b) 24.5
c) 25
d) 25.5

18. The average age of a family of 5 members is 24 years. If the youngest member is 6 years old, what is the average age of the other 4 members?
a) 26.5 years
b) 27.5 years
c) 28.5 years
d) 29.5 years

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Section 9: Time & Work

19. A can complete a work in 12 days, B in 15 days, and C in 20 days. They work together for 4 days, then A leaves. How many more days will B and C take to finish the remaining work?
a) 2 days
b) 3 days
c) 4 days
d) 5 days

20. A pipe can fill a tank in 8 hours. Due to a leak, it takes 12 hours to fill. How long will the leak alone take to empty the full tank?
a) 20 hours
b) 24 hours
c) 28 hours
d) 30 hours

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Section 10: Miscellaneous

21. The LCM of two numbers is 240 and their HCF is 12. If one number is 60, find the other.
a) 36
b) 48
c) 72
d) 96

22. Find the value of $\sqrt{0.0169}$0.0169​.
a) 0.13
b) 0.013
c) 1.3
d) 0.0013

23. If 15% of a number is 45, find 40% of that number.
a) 100
b) 110
c) 120
d) 130

24. A man sells two articles at ₹800 each. He gains 20% on one and loses 20% on the other. Find his overall profit or loss percentage.
a) 4% profit
b) 4% loss
c) No profit no loss
d) 2% loss

25. The ratio of boys to girls in a class is 4:3. If there are 28 boys, how many students are there in total?
a) 42
b) 45
c) 49
d) 56

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Answer Key

Q.No.	Answer	Q.No.	Answer	Q.No.	Answer
1	c) 16	10	a) 74	19	c) 4 days
2	b) 152	11	a) 10 years	20	b) 24 hours
3	c) 7	12	a) 8% increase	21	b) 48
4	c) ₹12000	13	a) 120 cm²	22	a) 0.13
5	a) ₹48,000	14	b) 25 cm	23	c) 120
6	b) 100 m	15	b) ₹600	24	b) 4% loss
7	a) 48 km/h	16	b) 17%	25	c) 49
8	c) 20%	17	a) 24
9	b) ₹10,000	18	c) 28.5 years

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Detailed Solutions for Key Questions

Q5: Partnership with Investment Change

Concept: When investment changes mid-year, calculate effective capital × time.

A’s investment: $(4\times 4)+(8\times 8)=16+64=80$(4×4)+(8×8)=16+64=80
B’s investment: $5\times 12=60$5×12=60
C’s investment: $6\times 12=72$6×12=72

Ratio: $80:60:72=20:15:18$80:60:72=20:15:18
Total parts = $20+15+18=53$20+15+18=53
A’s share = $\frac{20}{53}\times 1,32,000=\text{₹}48,000$5320​×1,32,000=₹48,000

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Q6: Train Length Formula

Formula: $\text{Length}=\frac{\text{Bridge length}\times \text{Time (pole)}}{\text{Time (bridge)}-\text{Time (pole)}}$Length=Time (bridge)−Time (pole)Bridge length×Time (pole)​

$L=\frac{200\times 8}{24-8}=\frac{1600}{16}=100$L=24−8200×8​=161600​=100 m

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Q7: Average Speed (Equal Distance)

Formula: $\text{Average Speed}=\frac{2\times S_1\times S_2}{S_1+S_2}$Average Speed=S1​+S2​2×S1​×S2​​

$=\frac{2\times 40\times 60}{40+60}=\frac{4800}{100}=48$=40+602×40×60​=1004800​=48 km/h

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Q9: CI – SI Formula

Formula: $\text{CI}-\text{SI}=P\times {\left(\frac{r}{100}\right)}^2$CI−SI=P×(100r​)2 for 2 years

$64=P\times {\left(\frac{8}{100}\right)}^2$64=P×(1008​)2
$64=P\times \frac{64}{10000}$64=P×1000064​
$P=64\times \frac{10000}{64}=\text{₹}10,000$P=64×6410000​=₹10,000

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Q15: Profit/Loss Difference Method

Let CP = x
Loss case: SP = 0.9x
Gain case: SP = 1.05x
Difference = $1.05x-0.9x=0.15x=90$1.05x−0.9x=0.15x=90
$x=\frac{90}{0.15}=\text{₹}600$x=0.1590​=₹600

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Q24: Same SP, Different Profit/Loss

When SP is same and profit% = loss%:

$\text{Loss\%}=\frac{(\text{Common gain/loss}\mathrm{\%}{)}^2}{100}$Loss%=100(Common gain/loss%)2​

$=\frac{{20}^2}{100}=\frac{400}{100}=4\mathrm{\%}$=100202​=100400​=4% loss

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How to Analyze Your RRB Group D Mock Test Score

Taking a RRB Group D mock test is only half the battle. The real improvement comes from post-test analysis:

Step 1: Categorize Mistakes

Error Type	Description	Action Plan
Conceptual	Wrong formula or method	Revisit topic from basics
Calculation	Wrong arithmetic	Practice mental math daily
Time Management	Spent too long	Learn shortcut tricks
Reading Error	Misunderstood question	Read twice before solving

Step 2: Track Your Progress

Maintain a spreadsheet with:

• Date of RRB Group D mock test
• Score achieved
• Number of attempts
• Accuracy percentage
• Topics with maximum errors

Step 3: Target Metrics

Parameter	Beginner	Good	Excellent
Attempts	12-15	18-20	22-25
Accuracy	60-70%	75-85%	90%+
Time per Q	2+ min	1-1.5 min	<1 min

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5 Tips to Maximize Your RRB Group D Mock Test Performance

1. Simulate Exam Conditions: Take your RRB Group D mock test at the same time as your actual exam slot to align your biological clock.
2. Use the 2-Minute Rule: If you can’t solve a question in 2 minutes, mark it for review and move on. Wasting time on one question can cost you 3-4 easy attempts later.
3. Master Vedic Math Tricks: Learn shortcuts for multiplication, squaring, and percentage calculations to cut down solving time.
4. Review Before Submitting: In the CBT interface, use the last 2 minutes to review flagged questions—don’t change answers unless you’re certain.
5. Consistency Over Intensity: One RRB Group D mock test every day is more effective than five tests in one day followed by a week of no practice.

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Conclusion

A well-planned RRB Group D mock test strategy is your strongest weapon for the upcoming CBT exam. Mathematics, with its high scoring potential and predictable patterns, can become your strongest section if practiced consistently.

This RRB Group D mock test set provides you with 25 carefully curated questions covering all important topics. Use the solutions to understand shortcut methods and apply them in your next practice session.

Remember: Every RRB Group D mock test you take brings you one step closer to your goal of wearing the Railway uniform. Keep practicing, stay consistent, and success will follow.

All the best for your RRB Group D exam!

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Frequently Asked Questions

Q: How many RRB Group D mock tests should I take before the exam?
A: Aim for 30-40 full-length mock tests and 50+ sectional tests for Maths to achieve optimal preparation.

Q: Is the Maths section in RRB Group D tougher than NTPC?
A: The difficulty level is similar to NTPC (Class 10th to Graduate level), but the time pressure is higher due to 100 questions in 90 minutes.

Q: Can I clear RRB Group D by only focusing on Maths?
A: No. While Maths is important, you need balanced preparation across General Science, General Awareness, and General Intelligence.

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Disclaimer: This RRB Group D mock test is created for practice purposes based on the latest exam pattern. Candidates should refer to the official RRB website for detailed notifications, syllabus updates, and exam schedules.