What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘−‘ are
interchanged and ‘×’ and ‘÷’ are interchanged?
16 ÷ 2 + 22 × 2 − 8 = ? + 3
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Correct answer: (C) 32
RRB JE · Topic-wise previous year questions
Mathematics Previous Year Questions (page 9)
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
Which statement is INCORRECT regarding prokaryotic organism?
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Correct answer: (A) Nuclear region is defined
P and Q together can fill a cistern with water in 24 hours. If P alone can fill the cistern
with water in 72 hours, then in how many hours will Q alone fill three-fourth of the same
cistern with water?
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Correct answer: (C) 27
The 7-digit number 57A001B is divisible by 9. What is the minimum value of (A + B)?
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Correct answer: (A) 5
This question is based on the five, three-digit numbers given below.
(Left) 857 329 417 628 751 (Right)
(Example- 697 – First digit = 6, second digit = 9 and third digit = 7)
What will be the resultant if third digit of the highest number is added to the third digit
of lowest number?
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Correct answer: (C) 16
What is it called when the government sells part of its share in public sector companies
to the public?
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Correct answer: (C) Disinvestment
A cyclist increases her speed from 6 m/s to 12 m/s in 3 seconds on a straight road.
What is her acceleration during this period?
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Correct answer: (A) 2 m/s²
A solid sphere is melted and recast into 18 identical cones, each having a base radius
of 3 cm and height of 18 cm. Find the radius of the sphere.
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Correct answer: (A) 9 cm
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Correct answer: (B) 42
Why do wet clothes dry faster when spread out?
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Correct answer: (C) Surface area is increased
Simplify: 52 - {38 ÷ (4 × 7 - 9)}
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Correct answer: (A) 50
A is faster than B. In a 2500 m race, A gives B a start of 200 meters. A runs at 25 m/s.
Who wins and by how much if B runs at 23 m/s?
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Correct answer: (A) They finish together
O and C are respectively the orthocentre and the circumcentre of an acute angled
triangle ∆PQR. ∠QCR = 138°. A perpendicular PM is dropped from P on side QR. If
∠PQR = 52°, what is the degree measure of ∠RPM?
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Correct answer: (D) 31
A cyclic compound that contains only single bonds is classified as:
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Correct answer: (C) Saturated
According to the law of constant proportions, the compound in which hydrogen and
oxygen are present in a fixed mass ratio of 1:8 is:
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Correct answer: (C) Water
A man bought two types of apples, one at ₹2 for 3 apples and the other at ₹6 per apple.
He purchased an equal number of each type and sold all the apples at ₹6 per apple.
Find his percentage profit.
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Correct answer: (B) 80%
In a seminar, 5 teachers and 7 students spent money on books. The average spending
of all of them together was ₹260. The average spending of the teachers alone was ₹400.
Find the average spending amount of the students.
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Correct answer: (A) ₹160
A and B jointly start a business. The investment of A is equal to three times the
investment of B. Find the share of A in the annual profit of ₹55204.
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Correct answer: (A) ₹41,403
The length of a rectangular field is 34 m more than its breadth. Its area is 5040 m². Its
breadth (in m) is:
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Correct answer: (B) 56
David 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 6% per annum after 2 years?
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Correct answer: (A) 52800
The harmonic mean of 4, 8 and 16 is (Rounded off to four decimal places)
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Correct answer: (D) 6.8571
Which property correctly distinguishes liquids from solids?
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Correct answer: (D) Liquids have fixed volume but no fixed shape
The following data represents the number of goals scored by a football team in 10
matches.
2, 3, 1, 4, 2, 5, 2, 3, 2, 4
The mode of the above data is x. If one more match is played, and the team scores 3
goals, what will be the difference between the previous mode and the new mode?
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Correct answer: (D) 0
A ball initially at rest is dropped from a height and takes 5 seconds to reach the ground.
What is the average speed during its fall? (g = 10 m/s²)
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Correct answer: (D) 25 m/s
A sound wave travels from air into water. How does its frequency, speed, and
wavelength change as it crosses the boundary?
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Correct answer: (D) Its frequency remains constant, speed increases, and wavelength increases
Refer to the following number and symbol series and answer the question that follows.
Counting to be done from left to right only. (Note: All numbers are single digit numbers
only.)
(Left) 8 9 & 8 $ 5 # @ & # 4 @ 3 ! + ? 4 5 & 8 (Right)
If all the symbols are dropped from the series, which of the following will be seventh
from the right?
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Correct answer: (A) 8
Which statement correctly describes a heterogeneous mixture?
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Correct answer: (C) Its composition is not uniform throughout the mixture
Suppose a student wants to design an amusement park ride that moves people in a
circle at uniform speed. Which concept should the student apply to ensure riders stay
safely in their seats during the circular motion?
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Correct answer: (D) A constant inward (centripetal) force is needed on the riders to keep them in uniform circular motion
A plant sheds its leaves and bark to remove stored waste products. How does this
strategy differ from the way animals excrete wastes?
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Correct answer: (D) Plants use parts that will be shed, while animals have specialized organs for excretion.
A dishonest vendor claims that he is selling goods at their cost price. But he is
weighing 902 grams for 1000 grams. What is his profit percentage (rounded off to 2
decimal places)?
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Correct answer: (D) 10.86%
If a point is located below the principal axis of a spherical mirror, what sign is assigned
to its perpendicular distance according to the sign convention for spherical mirrors?
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Correct answer: (D) Negative
In this question, a group of numbers/symbols is coded using letter codes as per the
codes given below and the conditions which follow. The correct combination of codes
following the conditions is your answer. If none of the conditions follow, then codes for
the respective Number/Symbol are to be followed directly as given in the table.
Number/symbol 2@ 58 $9& % #6+731
Code
P TF JW A E RD Q S B U L
Conditions:
If the first element is a number and the last a symbol, the codes for these two (the first
and the last elements) are to be interchanged.
If the first element is an even number and the last an odd number, the first and last
elements are to be coded as $.
If both the second and third elements are perfect cubes, the third element is to be
coded as the code for the second element.
What is the code for the following group of numbers/symbols?
28%5
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Correct answer: (D) $JR$
In this question, a group of number/symbol is coded using letter codes as per the codes
given below and the conditions which follow. The correct combination of codes
following the conditions is your answer. If none of the conditions follow, then codes for
the respective Number/Symbol to be followed directly as given in the table.
NUMBER/SYMBOL 7$86+ 5429@ *
CODE
A E R T H U K L P Z C V NQ
Conditions –
(i) If the first element is a symbol and the last a number, the codes for these two (the
first and
the last elements) are to be interchanged.
(ii) If the first element is an odd number and the last an even number, the first and last
elements are to be coded as ©
(iii) If both second and third elements are perfect squares, the third element is to be
coded as
the code for the second element.
What will be the code for the following group?
7 4 9 @ $
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Correct answer: (D) A Z Z N E
The selling price of 20 books is equal to the cost price of 31 books. Find the loss or gain
percentage.
- A55 % gain
- B
- C55 % loss
- D
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Correct answer: (A) 55 % gain
The 7-digit number 93A562B is divisible by 9, What is the minimum value of (A + B)?
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Correct answer: (A) 2
Girish scored 664 marks in an examination and was 8 marks short of 84% of the
maximum marks. In the same examination, his friend scored 472 marks. What is the
percentage of marks scored by his friend?
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Correct answer: (A) 59%
If 7 : 21 :: 2.2 : x and 7 : 49 :: 9 : y, what is the ratio of x to y?
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Correct answer: (A) 11 : 105
In a wallet containing gold, silver and bronze tokens, the ratio of gold to silver tokens
was 5:17 while the ratio of bronze to gold tokens was 18:19. What was the ratio of
bronze to silver tokens?
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Correct answer: (C) 90:323
During a round-trip journey where a person walks to a location at 5 km/h and returns at
3 km/h, which statement about average speed is correct?
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Correct answer: (C) Average speed will be less than the arithmetic mean of 5 km/h and 3 km/h.
The average of the first 18 positive multiples of 15 is:
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Correct answer: (D) 142.5
Find the least number which when divided by 5, 6, 3 and 4 leaves a remainder 2, but
when divided by 7 leaves no remainder.
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Correct answer: (D) 182
The population of country is 10 crores at present and is expected to grow to 17.28
crores in the next three years. Neglecting the death rate, the uniform annual percentage
rate of growth is:
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Correct answer: (B) 20
Why are solids described as rigid in nature?
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Correct answer: (C) Their particles are closely packed with strong attraction
Kiran has borrowed an amount of ₹4,40,000 from a bank to start a business. How much
simple interest (in ₹) will he pay at a rate of 7% per annum after 2 years?
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Correct answer: (C) 61600
Simplify the following.
294 ÷ [10 ÷ 5 × {11 + 12 − (8 + 5 − (10 + 1))}]
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Correct answer: (A) 7
The length of a rectangular ground is 21 m more than its breadth. Its area is 31,042 m².
Its breadth (in m) is:
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Correct answer: (D) 166
The average sale of cars by a dealer per day in the month of March, other than on
Saturdays and Sundays, is 151. The average sale of cars per day on Sundays is 129.
What is the average sale of cars per day on Saturdays, if the first Saturday is on the 3rd
of March and average sale of cars per day for the whole month is 148?
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Correct answer: (B) 150
Chetan’s salary was first reduced by 40% and subsequently raised by 24%. How much
percentage was his final salary lower compared to his initial salary?
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Correct answer: (C) 25.6%
Anirudh and Brahmaji are assigned the work of constructing a wall. Anirudh can do the
job in 60 hours alone where as Brahmaji can do the job three times faster. Anirudh
starts the work during the first hour and Brahmaji does the work during the second
hour. During the third hour both do the job simultaneously. If they continue in this
fashion, how long it will take for them to complete the job?
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Correct answer: (C) 23 hours
If + means - , - means x , x means ÷ , ÷ means +, then what will come in place of the
question mark (?) in the following equation?
8-21×3÷75+13=?
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Correct answer: (D) 118
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.