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## RRB Group D Maths Questions & Answers

1. A cow is tied to a pole fixed at a corner outside a room with a square base in a grass field. It is tied using a 14 m long rope. The side of the base of the room is 21 m. Find the area of the field over which the cow can graze (in sq. m)?

A. 440
B. 484
C. 462
D. 420

2. If a  principal at compound interest amounts in two years to ₹3932.6 and in three years to ₹4168.52. Find the original sum?

A. 3200
B. 3500
C. 2200
D. 3000

3. A Bus company has 108 buses. He sold some of them at 9 % profit and the rest at a 36% profit. Thus he gains 17% on the sale of all the buses. Find the number of buses sold at 36% profit?

A. 30
B. 32
C. 27
D. None of these

4. Two ships are sailing in the sea on the two sides of a lighthouse. The angle of elevation of the top of the lighthouse observed from the ships is 30° and 45° respectively. If the lighthouse is 100 m high, the distance between the two ships is:

A. 273m
B. 173m
C. 300m
D. 170m

5. In a box, there are 8 red, 7 blue, and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

A. 1/3
B. 3/4
C. 7/9
D. 8/21

6. Insert the missing number: 2, 4, 12, 48, 240, (….)

A. 1080
B. 1440
C. 1920
D. None of these

7. Out of 11 persons, 10 persons spent Rs. 35 each for their meals. The 11th one spent Rs. 40 more than the average expenditure of all the nine. The total money spent by all of them was:

A. Rs. 492.50
B. Rs. 497.50
C. Rs. 429
D. Rs. 498.50

8. If 5 boys eat 18 apples in 9 days, how long at the same rate will 66 apples last for 15 boys?

A. 15 days
B. 13 days
C. 8 days
D. 11 days

9. Find the value of (1 + (1/x)) (1 + 1/x+1) (1 + 1/x+2) (1 + 1/x+3) (1 + 1/x+4)?

A. x + 5
B. x + 5/x
C. x + 1/x
D. x

10. Find the L.C.M. of 108/375, 1(17/25), 54/55 =?

A. 678/5
B. 289/5
C. 151(1/5)
D. 238 (3/5)

11. 644 ÷ 85

A. 4096
B. 512
C. 64
D. 8

12.  In an examination, 50% of students failed in Physics and 40% in chemistry, and 15% of students failed in both subjects. If 400 students passed in both the subjects find the number of students who appeared in the exam.

A. 1600
B. 500
C. 1200
D. 1000

13. The ratio of prices of two laptops was 13: 17. The price of the first laptop went up, 10 years later by 100% and that of the second went up by Rs 2500 and the new ratio of their prices became 3: 5. Find the original prices of the two laptops?

A. 3400 and 4200
B. 3900 and 5100
C. 4936 and 6455
D. None of these

14.  The radius of the base of a right circular cylinder is 5.5 cm and its height is 6.5 cm. The ratio of the total surface area of the cylinder to its curved surface area is:

A. 24: 5
B. 24: 13
C. 24: 7
D. 24: 11

15. The average weight of X, Y, and Z is 45 kg. If the average weight of X and Y be 40 kg and that of Y and Z be 43 kg, then the weight of Y is:

A. 31 kg
B. 26 kg
C. 59 kg
D. 46 kg

16. A salesman is allowed a discount of 5.5% on the total sales made by him plus a bonus of 0.5% on sales over Rs. 10,000. If his total earnings were Rs. 1,990, then his total sales (in Rs.) were:

A. Rs. 34,000
B. Rs. 45,000
C. Rs. 22,000
D. Rs. 32,000

17. The least number that must be added to 8961 to make it exactly divisible by 84 is

A. 27
B. 57
C. 141
D. 107

18. Value of the expression 4 of (5/4) + [-6 – (-12) of 2] is

A. 20
B. 21
C. 23
D. 30

19. Mohan runs 220 meters daily. How many kilometers will he complete in 3 weeks?

A. 4.52 KM
B. 4.62 KM
C. 4 KM
D. 5.62 KM

20. 18% of 450 – 75% of 96 =?

A. 15
B. 9
C. 12
D. 16

21. A, B, C, D, and E are continuous 5 even numbers, a drug of A and E is 46. Find the largest number?

A. 48
B. 50
C. 42
D. 52

22. If 3/5 of a number is 85 more than 40 percent of it. What is 60% of this number?

A. 255
B. 250
C. 265
D. 300

23. Find the odd man out: 41, 43, 47, 53, 61, 71, 73, 81

A. 61
B. 71
C. 73
D. 81

24. If the speed of 24 kmph is converted into m/s, what would be the value obtained?

A. 6.67
B. 12.33
C. 13.33
D. 9.67

25. By selling 20 meters of cloth, a man gains the selling price of 4 meters of cloth. The gain percent is:

A. 25%
B. 30%
C. 20%
D. 35%

We hope the above given RRB Group D Mathematics Questions and Answers are useful. Candidates can get all the latest updates by following our page @ Freshers Now.

## RRB Group D Mathematics Questions And Answers – Frequently Asked Questions

How many questions will be asked in the RRB Group D Mathematics Exam 2020?

25 Questions will be asked in the RRB Group D Mathematics Exam 2020.

What is the Time Duration given for RRB Group D Exam 2020?

The Time duration given for RRB Group D Exam 2020 is 90 Minutes for General candidates, 120 Minutes for PWD Candidates.