RRB Group D - Mathematics PYQ Quiz 146
10 PYQ questions from RRB Group D - Mathematics
About This Quiz
This is one set from a larger bank. See all RRB Group D Mathematics previous year questions.
RRB Group D - Mathematics PYQ Quiz 146 — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.The sum of three numbers is 180. If the ratio of the second number to the first number is 14:7 and that of the third number to the second number is 15:15, then find the second number.
- A.70
- B.72
- C.71
- D.74
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Answer: B. 72
Q2.Bharat goes to a shop to purchase a toy train priced at ₹5,000. He is offered 4 discount options by the shopkeeper. Which of these options should he opt for to gain maximum advantage of the discount offered?
- A.Two successive discounts of 44% and 18%
- B.Two successive discounts of 30% each
- C.Two successive discounts of 24% and 25%
- D.Single discount of 22%
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Answer: A. Two successive discounts of 44% and 18%
Q3.102 men have provisions for 30 weeks. They are joined by 68 men. How long (in weeks) will the provisions last?
- A.22
- B.18
- C.20
- D.16
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Answer: B. 18
Q4.In a student body election, 5% of the eligible voters are aged 18–21 years, 12% are aged 21–25 years, and the rest are older than 25 years. Among these groups, 80% of the 18–21 year age group and 60% of the 21–25 year age group actually voted. If the number of voters aged 21–25 years who voted exceeds those aged 18–21 years by 320, what is the difference between the number of eligible voters aged 18–21 years and those aged 21–25 years?
- A.600
- B.500
- C.700
- D.800
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Answer: C. 700
Q5.The amount on a sum of ₹7,500 at 8% per annum compound interest, compounded annually, in 2 years will be:
- A.₹8,989
- B.₹9,355
- C.₹9,135
- D.₹8,748
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Answer: D. ₹8,748
Q6.In how many minutes will a cistern be filled if three pipes with diameters 2 cm, 3 cm and 4 cm are opened together, given that the largest pipe alone can fill it in 87 minutes? (Assume the rate of flow of water through each pipe is proportional to the square of its diameter.)
- A.36
- B.50
- C.48
- D.40
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Answer: C. 48
Q7.A solid cylinder has a height of 12 cm and a radius of r cm. A part of the cylinder is melted and molded into two cones. One cone has a radius of 3 cm and a height of 4 cm, while the other cone has a radius of 6 cm and a height of 8 cm. If the ratio of the curved surface area of the original cylinder to the sum of the curved surface areas of the two cones is 4 : 1, find the value of 2r.
- A.27
- B.24
- C.25
- D.26
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Answer: C. 25
Q8.For what value of x will the equation (x + 5)2 − (x − 5)2 = 80 be true?
- A.3
- B.5
- C.6
- D.4
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Answer: D. 4
Q9.If the cost price of 30 chairs is equal to the selling price of 40 chairs, find the loss percentage.
- A.25%
- B.17%
- C.19%
- D.23%
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Answer: A. 25%
Q10.If the radius of a sphere is increased by 15%, then find the percentage increase in its volume. (Rounded up to 2 decimal places.)
- A.41.67%
- B.52.09%
- C.80.25%
- D.23.20%
Show answer
Answer: B. 52.09%
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Which government exams does this quiz prepare me for?
Mathematics questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.