Select the triad which follows the same pattern as that followed by the two triads given
below. Both triads follow the same pattern.
JM-HK-FI
MP-KN-IL
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Correct answer: (B) PS-NQ-LO
RRB JE · Topic-wise previous year questions
Mathematics Previous Year Questions (page 8)
561 Mathematics questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 561 questions
- 14 topics
- Official answer key
- Free
Practise by topic
A boat travels 36 km downstream in 3 hours and returns upstream covering the same
distance in 5 hours. What is the speed of boat in still water?
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Correct answer: (B) 9.6 km/hour
Refer to the following letter, number, symbol series and answer the question that
follows. (NOTE: All numbers are single digit numbers only) Counting to be done from
left to right only.
(Left) H 9 & 3 L ! 6 M $ 7 R @ 4 C % 2 F # 5 K * 8 P (Right)
How many such symbols are there, each of which is immediately preceded by a number
and also immediately followed by another symbol?
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Correct answer: (B) None
Five years ago, the ratio of the ages of Amit and Bhanu was 2 : 3. Fifteen years from
now, their ages will be in the ratio of 5 : 6. Find the sum of their present ages. (Give
your answer in years and months, if relevant.)
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Correct answer: (A) 43 years, 4 months
Akshay has borrowed an amount of ₹440000 from a bank to start a business. How
much simple interest (in ₹) will he pay at a rate of 5% per annum after 4 years?
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Correct answer: (D) 88000
When using the sign convention for spherical mirrors, which direction along the
principal axis is considered positive?
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Correct answer: (A) To the right of the origin (along + x-axis)
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Correct answer: (C) 27,021.5 cm2
The sum of the squares of two consecutive even natural numbers is 3700. The sum of
the numbers is:
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Correct answer: (C) 86
What was a consequence of the economic structure in India between 1947 and 1991?
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Correct answer: (B) Slow industrial growth due to heavy regulation and protectionism
P gives Q a head-start of 10 seconds in a 600 m race, but both finish the race at the
same time. Find the time taken by P to finish the race if the speed of Q is 4 m/sec.
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Correct answer: (A) 140 Seconds
A and B can complete a work in 15 days and 10 days, respectively. They started doing
the work together but after 2 days, B had to leave, and A completed the remaining work
alone. The whole work was completed in ______________ days.
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Correct answer: (C) 12
A trader gives 8% discount on the marked price of an article and gives 3 articles free for
buying 18 articles and gains 38% in the entire transaction. Assuming a customer pays
for 18 articles, the marked price of an article is what percent more than its cost price?
- A
- B
- C
- D
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Correct answer: (B)
In an election between two candidates, 86% of the registered voters cast their votes and
6% of the votes polled were found invalid. The winning candidate got 58% of the valid
votes and won the election by a margin of 202100 votes. How many voters were
registered?
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Correct answer: (B) 1562500
In a pond ecosystem, removal of phytoplankton would most directly affect
____________.
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Correct answer: (C) Primary consumers like zooplankton
If 2 : 4 :: 4.6 : x and 4 : 16 :: 2 : y, what is the ratio of x to y?
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Correct answer: (C) 23 : 20
A wire of a given material has length l and cross-sectional area A , and its resistance is
9 Ω. Another wire of the same material has length l/3 and cross-sectional area 3A. What
will be the resistance of the second wire?
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Correct answer: (D) 1 Ω
If the cost price of 24 articles is equal to the selling price of 15 articles, then find the
percentage of profit.
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Correct answer: (A) 60%
Gopal has borrowed an amount of ₹420000 from a bank to start a business. How much
simple interest (in ₹) will he pay at a rate of 5% per annum after 4 years?
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Correct answer: (D) 84000
The average of the first 18 positive multiples of 7 is:
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Correct answer: (C) 66.5
The ratio of the cost prices of articles X and Y is 3 : 7. A man earns a profit of 49% by
selling X and loses 16% by selling Y. What is his gain/loss percentage in the entire
transaction?
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Correct answer: (D) Gain, 3.5%
A grocer wishes to sell a mixture of two varieties of rice worth ₹56 per kg. In what ratio
must he mix the rice to reach this selling price, when cost of one variety of rice is ₹54
per kg and the other is ₹64 per kg?
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Correct answer: (A) 4 : 1
The height of a tree varies as the square root of its age. When the age of the tree is 324
years, its height is 19 feet. What will be the height of the tree (in feet) at the age of 81
years?
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Correct answer: (C) 9.5
A student scored 60, 70, and 80 in three subjects with weights 2, 3, and 5, respectively.
What is the weighted mean score?
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Correct answer: (A) 73
If + means - , - means x , x means ÷ , ÷ means +, then what will come in place of the
question mark (?) in the following equation?
7-24×6÷18+7=?
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Correct answer: (D) 39
This question is based on the five, three-digit numbers given below.
(Left) 453 914 527 658 715 (Right)
(Example- 697 – First digit = 6, second digit = 9 and third digit = 7)
NOTE - All operations to be done from left to right.
What will be the resultant if the third digit of the highest number is multiplied with the
second digit of the lowest number?
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Correct answer: (D) 20
M, A, T, H and S, each have different ages and all ages are integers. M is younger than
only two persons. H is 88 years old, which is the second highest age. S is younger than
M but older than A. Who is the eldest?
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Correct answer: (B) T
Rupesh’s salary was first reduced by 44% and subsequently raised by 15%. How much
percentage was his final salary lower compared to his initial salary?
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Correct answer: (A) 35.6%
A designer wants to create a device that spreads light from a small bulb to illuminate a
wide area uniformly. Which lens should be used and why?
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Correct answer: (D) A concave lens, because it diverges light rays outward
Which of the following is a biotic factor causing storage losses in grains?
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Correct answer: (D) Insects
Garima bought an original hardbound book for ₹56,000. Its value depreciates by 5% per
year. What will be the price (in ₹) of the book after 3 years?
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Correct answer: (B) 48,013
The radius of a solid right circular cone is 24 cm and its height is 32 cm. The total
surface area of the cone is:
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Correct answer: (C) 960π cm2
The equations x² − 5x + 6 = 0 and x² +ax + b = 0, have exactly one common root, and the
other root of the second equation is –4. Among the following, which are the possible
values of a and b?
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Correct answer: (D) a=2, b=−8
A farmer wants to improve both the quantity and taste of honey produced on his bee
farm. Which of the following strategies should he adopt?
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Correct answer: (D) Increase the variety and quantity of flowering plants near the beehives.
The lengths of the three sides of a triangle are 13 cm, 14 cm and 15 cm, respectively.
Find the area (in cm²) of the incircle of this triangle. [Use π = 3.14]
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Correct answer: (C) 50.24
A train moves 120 km at 60 km/h and then another 60 km at 30 km/h. What is the
average speed for the entire journey?
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Correct answer: (B) 45 km/h
Which of the following numbers is divisible by both 9 and 43?
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Correct answer: (B) 8901
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Correct answer: (C) 43
Find the LCM of 8, 12, and 20.
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Correct answer: (C) 120
Which of the following statements regarding the Namo Drone Didi scheme is/are
correct?
1. It is a Central Sector Scheme for providing drones to Women Self Help Groups for the
period from 2024-25 to 2025-26 with an outlay of ₹1,261 crore.
2. The scheme aims to provide drones to 15,000 selected Women Self Help Groups for
providing rental services to farmers for agriculture purposes.
3. Under the scheme, Women Self Help Groups receive substantial financial assistance,
covering 80% of the drone and accessory costs, up to ₹8 lakh.
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Correct answer: (B) 1, 2 and 3
The average of the first 18 positive multiples of 14 is:
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Correct answer: (C) 133
In a parallel combination of three resistors, which statement correctly describes the
total current in the circuit?
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Correct answer: (D) It is equal to the sum of the currents through each resistor
A total profit of ₹14,500 is to be distributed amongst A, B, and C such that A : B = 16 : 3
and B : C = 6 : 20. The share (in ₹) of C in the profit is:
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Correct answer: (B) 5,000
A shopkeeper bought six identical mobile phones for ₹45,000. He sold two of these
mobile phones for ₹42,000. Find his gain percentage.
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Correct answer: (C) 180%
The list price of a washing machine is ₹87,200. It is sold to a retailer after two
successive discounts of 9% and 50%. The retailer wants to earn a profit of 25% on his
cost after allowing a 48% discount (on its new list price) to the customer. At what price
should he list the washing machine?
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Correct answer: (A) ₹95,375
The price of fuel decreases by 55%, 55% and 30% in three successive months, but
increases by 50% in the fourth month. What is the percentage increase/decrease in the
price of fuel in the fourth month as compared to its original price?
[Give your answer correct to two places after decimal.]
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Correct answer: (C) Decreases by 78.74%
Sujit is three times as old as his son, and his daughter is 3 years younger than the son.
If the sum of the ages of these three people 3 years ago from now was 88 years, then
Sujit's present age (in years) is
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Correct answer: (D) 60
Suman’s earnings in a month are five-sevenths of Meera’s. In the next month, Meera’s
earnings become five-eighths of Suman’s previous month earnings. By what percent
are Meera’s current earnings less than Suman’s current earnings?
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Correct answer: (B) 37.5%
X people were given a contract for doing a piece of work in 18 days. 2 people did not
turn up to work due to sickness, and the rest of the people completed the work in 27
days. What is the value of X?
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Correct answer: (A) 6
The difference between compound interest, compounded annually, and simple interest
for 3 years at a rate of 20% per annum is ₹256. What is the principal lent?
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Correct answer: (B) ₹2,000
Monthly income of Mohit is ₹12800 and his monthly expenditure is ₹ 4000. If his income
is decreased by 25% and expenditure is decreased by ₹ 1000, then find the decrease in
his monthly savings?
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Correct answer: (D) ₹ 2200
How to use these RRB JE Mathematics questions
Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.