RRB Group D - Mathematics PYQ Quiz 150
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 150 — 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.An 8-digit number is divisible by 45. If the digits are rearranged, then the number must be divisible by:
- A.5
- B.15
- C.45
- D.3
Show answer
Answer: D. 3
Q2.In an election, 30% of the total votes were declared invalid. Of the remaining valid votes, 60% were cast for the winning candidate. What percentage of the total votes did the losing candidate receive?
- A.15%
- B.35%
- C.28%
- D.40%
Show answer
Answer: C. 28%
Q3.A water tank can be filled in 12 hours using three pipes. Pipe Z is three times as fast as pipe C, and pipe C is twice as fast as pipe B. How long will it take pipe B alone to fill the tank?
- A.108 hours
- B.96 hours
- C.50 hours
- D.100 hours
Show answer
Answer: A. 108 hours
Q4.The father's age will be double his son's age after twenty years from now. If the father's age was seven times the son's age five years ago from now, then find their present ages (in years), respectively.
- A.38, 9
- B.42, 11
- C.40, 10
- D.46, 13
Show answer
Answer: C. 40, 10
Q5.A triangle has sides of length 13 cm, 14 cm and 15 cm. Find the area of the triangle.
- A.88 cm2
- B.92 cm2
- C.72 cm2
- D.84 cm2
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Answer: D. 84 cm2
Q6.Find the HCF of the numbers 2520, 3600, 5880.
- A.100
- B.120
- C.140
- D.180
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Answer: B. 120
Q7.A person travels 60 km by car at a speed of 50 km/hr, then 80 km by bus at a speed of 40 km/hr and finally 100 km by train at a speed of 80 km/hr. What is the average speed (rounded off two decimal places) of the person for the entire trip?
- A.53.93 km/hr
- B.59.93 km/hr
- C.48.93 km/hr
- D.61.93 km/hr
Show answer
Answer: A. 53.93 km/hr
Q8.If the mode of a data exceeds its mean by 10.8, then the mode exceeds the median by . (Use empirical formula to find the answer.)
- A.7.2
- B.12.9
- C.9.3
- D.15.5
Show answer
Answer: A. 7.2
Q9.The arithmetic mean of the observations 27, 69, 15, 88, 15, 54, 53, 20 and 19 is:
- A.50
- B.37
- C.40
- D.31
Show answer
Answer: C. 40
Q10.The area of an isosceles triangle is 48 square units. The unequal side (base) has a length of 12 units. Find the perimeter (in units) of the triangle.
- A.24
- B.36
- C.28
- D.32
Show answer
Answer: D. 32
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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.