IBPS RRB Clerk Quant Questions with Answers: Quick Answer
This page gives you 20 original IBPS RRB Clerk quant questions with answers and step-by-step solutions, written for the Numerical Ability section of the Prelims exam. In the 2026 cycle, the RRB Clerk Prelims has 40 Numerical Ability questions for 40 marks with a separate 20-minute timer, alongside 40 Reasoning questions with a 25-minute timer, and 0.25 negative marking. The questions below are practice questions written in the style and level of the exam — they are not previous year questions, and no question here is copied from any paper. As of 2 November 2026, the Prelims are scheduled for 6, 12 and 13 December 2026.
Numerical Ability in RRB Clerk Prelims is a speed test: 40 questions in 20 minutes means 30 seconds per question. The section is dominated by simplification, number series, quadratic equations, arithmetic word problems and data interpretation. This 20-question set covers all of those types. Work through it with a timer, without a calculator, and read every solution — the shortcut in each solution is the point of the exercise.
How to Use These IBPS RRB Clerk Quant Questions
Set a timer for 10 minutes for these 20 questions — that is the same 30 seconds per question the real section demands. Do the easy ones first: simplification, percentages and averages are usually the fastest marks. Leave the longer word problems for a second pass. After the timer, check your answers and study the solution for every question you skipped or got wrong. If a type is slow for you, practise ten more of that type before moving on; speed in this section comes from recognising the type, not from calculating faster.
20 IBPS RRB Clerk Quant Questions with Answers
Q1. What is the value of 45% of 640 + 25% of 480?
(A) 408
(B) 398
(C) 418
(D) 388
Answer: (A) 408. 45% of 640 = 288 and 25% of 480 = 120. Adding them: 288 + 120 = 408.
Q2. What is the value of 18 × 14 + 36 ÷ 4?
(A) 252
(B) 261
(C) 270
(D) 243
Answer: (B) 261. Do multiplication and division first: 18 × 14 = 252 and 36 ÷ 4 = 9. Then 252 + 9 = 261.
Q3. A train 150 metres long runs at 54 km/h. In how many seconds does it cross an electric pole?
(A) 12 seconds
(B) 9 seconds
(C) 10 seconds
(D) 15 seconds
Answer: (C) 10 seconds. 54 km/h = 54 × 5/18 = 15 m/s. Time = distance ÷ speed = 150 ÷ 15 = 10 seconds.
Q4. Find the simple interest on ₹8,000 at 12.5% per annum for 3 years.
(A) ₹2,500
(B) ₹3,500
(C) ₹2,800
(D) ₹3,000
Answer: (D) ₹3,000. Simple interest = (P × R × T) ÷ 100 = (8,000 × 12.5 × 3) ÷ 100 = ₹3,000.
Q5. What is the compound interest on ₹10,000 at 10% per annum for 2 years, compounded annually?
(A) ₹2,100
(B) ₹2,000
(C) ₹2,200
(D) ₹1,900
Answer: (A) ₹2,100. Amount = 10,000 × (1.10)² = ₹12,100. Interest = 12,100 − 10,000 = ₹2,100.
Q6. What is the average of the first five odd numbers starting from 11?
(A) 14
(B) 15
(C) 16
(D) 17
Answer: (B) 15. The numbers are 11, 13, 15, 17 and 19. Their sum is 75 and 75 ÷ 5 = 15.
Q7. ₹140 is divided between A and B in the ratio 3 : 4. How much does A get?
(A) ₹80
(B) ₹70
(C) ₹60
(D) ₹50
Answer: (C) ₹60. Total parts = 3 + 4 = 7. One part = 140 ÷ 7 = 20. A gets 3 × 20 = ₹60.
Q8. 30% of a number is 90. What is the number?
(A) 270
(B) 320
(C) 280
(D) 300
Answer: (D) 300. If 30% is 90, then 1% is 3, so 100% is 300. In short: 90 ÷ 0.30 = 300.
Q9. A can finish a work in 12 days and B in 18 days. Working together, in how many days will they finish it?
(A) 7.2 days
(B) 6 days
(C) 8 days
(D) 7.5 days
Answer: (A) 7.2 days. Together they do 1/12 + 1/18 = 5/36 of the work per day, so the work takes 36/5 = 7.2 days.
Q10. What comes next in the series 3, 9, 27, 81, ...?
(A) 162
(B) 243
(C) 216
(D) 324
Answer: (B) 243. Each term is multiplied by 3: 3 × 3 = 9, 9 × 3 = 27, 27 × 3 = 81, so 81 × 3 = 243.
Q11. What is the larger root of the equation x² − 7x + 12 = 0?
(A) 3
(B) 6
(C) 4
(D) 2
Answer: (C) 4. Factorising: x² − 7x + 12 = (x − 3)(x − 4) = 0, so x = 3 or x = 4. The larger root is 4.
Q12. An article bought for ₹500 is sold for ₹650. What is the profit percentage?
(A) 25%
(B) 35%
(C) 20%
(D) 30%
Answer: (D) 30%. Profit = 650 − 500 = ₹150. Profit % = (150 ÷ 500) × 100 = 30%.
Q13. The marked price of a watch is ₹2,000. It is sold at a 20% discount. What is the selling price?
(A) ₹1,600
(B) ₹1,500
(C) ₹1,700
(D) ₹1,800
Answer: (A) ₹1,600. A 20% discount means the buyer pays 80% of the marked price: 2,000 × 0.80 = ₹1,600.
Q14. A car covers 360 km in 4.5 hours. What is its average speed?
(A) 75 km/h
(B) 80 km/h
(C) 85 km/h
(D) 90 km/h
Answer: (B) 80 km/h. Speed = distance ÷ time = 360 ÷ 4.5 = 80 km/h.
Q15. A mixture of milk and water is in the ratio 5 : 2. How much milk is there in 35 litres of the mixture?
(A) 20 litres
(B) 28 litres
(C) 25 litres
(D) 22 litres
Answer: (C) 25 litres. Total parts = 7. One part = 35 ÷ 7 = 5 litres. Milk = 5 × 5 = 25 litres.
Q16. A father is three times as old as his son. The sum of their ages is 48 years. How old is the son?
(A) 14 years
(B) 16 years
(C) 10 years
(D) 12 years
Answer: (D) 12 years. Let the son be x years. Then 3x + x = 48, so 4x = 48 and x = 12 years.
Q17. What is the HCF of 24, 36 and 60?
(A) 12
(B) 6
(C) 18
(D) 24
Answer: (A) 12. 24 = 2³ × 3, 36 = 2² × 3², 60 = 2² × 3 × 5. The common factors are 2² × 3 = 12.
Q18. What is the area of a square whose side is 15 metres?
(A) 215 sq m
(B) 225 sq m
(C) 235 sq m
(D) 250 sq m
Answer: (B) 225 sq m. Area of a square = side × side = 15 × 15 = 225 square metres.
Q19. A shop's sales (in units) over four weeks were 120, 150, 180 and 210. What were the total sales over the four weeks?
(A) 640 units
(B) 680 units
(C) 660 units
(D) 650 units
Answer: (C) 660 units. Add the four weeks: 120 + 150 + 180 + 210 = 660 units.
Q20. What comes next in the series 2, 6, 12, 20, 30, ...?
(A) 36
(B) 40
(C) 44
(D) 42
Answer: (D) 42. The differences are 4, 6, 8, 10, increasing by 2 each time, so the next difference is 12 and 30 + 12 = 42. Equivalently, the terms are n(n + 1): 6 × 7 = 42.
IBPS RRB Clerk Quant: What to Practise Next
The set above covers the five question families that decide the Numerical Ability section. Simplification and approximation (questions 1 and 2) are the fastest marks — practise them until you can do each in under 20 seconds. Number series (questions 10 and 20) reward pattern recognition: check differences first, then ratios, then squares and cubes. Quadratic equations (question 11) appear in almost every RRB Clerk paper; factorise, do not use the formula, unless the numbers are ugly. Arithmetic word problems (questions 3 to 9 and 12 to 18) test one concept each — interest, ratio, work, speed, age or mixtures — so name the concept before you start calculating. Data interpretation (question 19) is the easiest section in Mains, where Numerical Ability grows to 40 questions in 30 minutes.
Two habits will lift your score more than any trick. First, learn the percentage-fraction pairs: 12.5% is 1/8, 20% is 1/5, 25% is 1/4 and 37.5% is 3/8. Second, never write out a full calculation when a ratio will do: question 7 was solved by finding one part, not by setting up an equation.
Practice Next
- IBPS RRB Clerk syllabus and exam pattern — the full Prelims and Mains scheme, including the separate timers for each test.
- IBPS RRB Office Assistant salary 2026 — pay, allowances and promotion for the Clerk post.
- IBPS RRB PO vs IBPS RRB Clerk 2026 — how the two RRB posts differ in pattern, salary and promotion.
- IBPS RRB Clerk Prelims full mock test 01 — a full 80-question Prelims mock with both sections.
- IBPS RRB Clerk Prelims new-pattern mock test 01 — a Prelims mock in the 2026 pattern with separate timers.
IBPS RRB Clerk Quant Questions FAQs
How many quant questions are there in IBPS RRB Clerk Prelims?
40 Numerical Ability questions for 40 marks, with a separate 20-minute timer. The Prelims paper has 80 questions in total: 40 Reasoning and 40 Numerical Ability. There is no English test in RRB Clerk Prelims.
Is there negative marking in IBPS RRB Clerk Prelims?
Yes. 0.25 mark is deducted for each wrong answer in both Prelims and Mains. With one mark per question, four wrong answers cancel one correct answer, so avoid blind guesses.
Are these IBPS RRB Clerk previous year questions?
No. Every question on this page is an original practice question written for this page. It is not copied from any IBPS paper, and it is not labelled as a previous year question. For previous year material, see the IBPS RRB Clerk previous year question paper page.
What topics come in RRB Clerk Numerical Ability?
Simplification and approximation, number series, quadratic equations, arithmetic (percentage, ratio, profit and loss, simple and compound interest, time and work, speed and distance, averages, ages, mixtures) and data interpretation. The Mains section adds data sufficiency and quantity comparison.
How do I improve speed in RRB Clerk quant?
Practise in 20-minute blocks of 40 questions, learn the percentage-fraction pairs, and skip a question the moment it looks longer than 45 seconds. Speed comes from recognising the question type instantly, which only happens with timed practice, not with reading solutions.