Quantitative Aptitude Mock Test | RRB NTPC

Q1. What is the sum of all integers from -5 to 5, inclusive?

0 5 -5 10

Q2. Find the number of digits in $20^{50}$.

65 66 67 68

Q3. Find the sum of the series 1/2 + 1/4 + 1/8 + ... to infinity.

1 2 1/2 3/2

Q4. Which of the following is NOT a composite number?

14 18 27 29

Q5. Which of the following is an example of a simple cubic structure?

Iron Sodium chloride Polonium Aluminum

Q6. What is the primary advantage of EMI for borrowers?

Higher total interest paid Manageable and fixed monthly payments Shorter repayment period Lower principal amount

Q7. Which of the following is NOT a proper divisor of 284?

142 71 284 4

Q8. If the sum of n terms of an AP is $3n^2 + 2n$, find the 15th term.

85 86 87 88

Q9. Which geometric figure has two parallel bases and sides that are trapezoids?

Prism Pyramid Cylinder Trapezoidal prism

Q10. A clock gains 5 seconds every 3 hours. In how many days will it gain 1 minute?

36 72 108 144

Q11. A, B, and C can do a piece of work in 6, 8, and 12 days respectively. They start together. A works for 3 days and leaves. B works for 4 days and leaves. C works for the remaining part. What fraction of the work is completed by B?

1/8 1/6 1/4 1/3

Q12. An item is sold for ₹4050 after two successive discounts of 10% and 10%. What was the original marked price?

₹5000 ₹5100 ₹5200 ₹5300

Q13. In a combined graph, a bar shows the production and a line shows the sales percentage. If 1000 units were produced and sales were 80% of production, how many units were sold?

700 750 800 850

Q14. The bar graph shows the profit (in lakhs) of a company for five consecutive years. If the revenue in Year 3 was ₹600 lakhs and the profit in Year 4 was 15% more than the profit in Year 3, what is the approximate revenue in Year 4, given that profit is 40% of revenue?

850 lakhs 920 lakhs 805 lakhs 875 lakhs

Q15. A sum of money doubles itself in 4 years at compound interest. In how many years will it become 16 times itself?

8 years 12 years 16 years 32 years

Q16. Find the number of digits in 7^12.

10 11 12 13

Q17. A pie chart represents the distribution of students in five different colleges. If the total number of students is 8000 and College C has 20% of the students, how many students are there in College C?

1200 1400 1600 1800

Q18. A line segment PQ has endpoints P(-3, 4) and Q(5, -2). If point R divides PQ internally in the ratio 3:1, what are the coordinates of R?

(3, 1) (2, 0) (3, -1) (2, 1)

Q19. A line segment has how many endpoints?

Zero One Two Infinite

Q20. A shopkeeper sells an article for Rs. 240 and makes a profit of 20%. What is the cost price of the article?

Rs. 190 Rs. 200 Rs. 210 Rs. 220

Mock Test

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