RRB-NTPC 2021 Mathematics

Practice subject-wise previous year questions

Question 2501
Arithmetic

The Thar Desert serves as a natural boundary between:

A
India and China
B
India and Pakistan
C
India and Nepal
D
India and Afghanistan
Question 2502
Arithmetic

Which of the following systems was abolished by the Nineteenth Amendment Act, 1966?

A
Election tribunals
B
Zamindari system
C
Privy purse system
D
Separate electorate system
Question 2503
Arithmetic

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 # 1 9 © 3 5 © € @ # £ @ * © 5 £ € 5 4 4 (Right) How many such numbers are there each of which is immediately preceded by a number and also immediately followed by a symbol?

A
3
B
4
C
5
D
2
Question 2504
Arithmetic

The 1991 reforms promoted deregulation of industries. Which industry continued to be reserved for public sector post-1991 reforms?

A
Electronics
B
Automobiles
C
Atomic energy
D
Textile
Question 2505
Arithmetic

Which of the following best describes the function of a 'Section Break (Next Page)' in MS Word?

A
It starts a new paragraph while maintaining the same formatting.
B
It ends the current section and starts a new section on the subsequent page.
C
It inserts a manual line break within the same paragraph.
D
It creates a visual divider between different parts of the document on the same page.
Question 2506
Arithmetic

The period from 1905 to 1917 is known as the "Extremist Phase" in the Indian National Movement. Which of the following leaders was NOT associated with the extremist ideology during this time?

A
Bipin Chandra Pal
B
Bal Gangadhar Tilak
C
Lala Lajpat Rai
D
Gopal Krishna Gokhale
Question 2507
Arithmetic

Seven friends, D, E, F, G, M, N and O, are sitting in a row facing north. Only five people sit between G and D. F sits to the immediate left of D. Only one person sits between F and M. O sits at some place to the left of E but at some place to the right of N. Who sits third from the left end of the line?

A
F
B
M
C
N
D
O
Question 2508
Arithmetic

Which metals are generally used for electrical transmission lines?

A
Iron and nickel
B
Silver and gold
C
Zinc and lead
D
Copper and aluminium
Question 2509
Arithmetic

A man spends 28% of his monthly salary on house rent. If every month, he also spends ₹687 on conveyance and ₹7,483 on grocery and saves the remaining ₹218, his monthly salary is:

A
₹11,738
B
₹11,650
C
₹11,594
D
₹11,743
Question 2510
Arithmetic

Find the area of four walls of a cube, the length of whose edge is $(3x + 8y + 5)$ m.

A
$(36x^2 + 124y^2 + 100 + 82xy + 160y + 80x)$ m$^2$
B
$(36x^2 + 256y^2 + 100 + 192xy + 160y + 120x)$ m$^2$
C
$(36x^2 + 256y^2 + 100 + 192xy + 320y + 120x)$ m$^2$
D
$(36x^2 + 184y^2 + 100 + 192xy + 160y + 80x)$ m$^2$
Question 2511
Arithmetic

The maximum number of Buddhist stupas had been built by which of the following rulers?

A
Chandragupta Maurya
B
Bimbisara
C
Ashoka
D
Pushyamitra Sunga
Question 2512
Arithmetic

What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?  215 ÷ 4 + 822 × 3 − 45 = ?

A
691
B
631
C
521
D
581
Question 2513
Arithmetic

Which of the following categories of MSMEs constitutes the major share of MSME registration on the Udyam Registration Portal?

A
Micro
B
Small
C
Large
D
Medium
Question 2514
Arithmetic

What is the significance of pipelining in CPU architecture?

A
Stores instructions in memory
B
Transfers data between registers
C
Increases clock speed using multiple cores
D
Executes multiple instructions simultaneously by overlapping stages
Question 2515
Arithmetic

What should come in place of the question mark (?) in the given series? 21 24 33 48 69 96 ?

A
116
B
138
C
141
D
129
Question 2516
Arithmetic

Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. QT-OR-MP XA-VY-TW

A
JM-HK-FJ
B
AD-YB-VZ
C
TW-RU-PS
D
NQ-LO-JN
Question 2517
Arithmetic

Where was the field demonstration of the DEW Mk-II(A) system conducted by DRDO in 2021?

A
Bengaluru
B
New Delhi
C
Kurnool
D
Pokhran
Question 2518
Arithmetic

Chetan starts from Point Y and drives 37 km towards the south. He then takes a right turn, drives 18 km, turns right and drives 58 km. He then takes a left turn and drives 61 km. He takes a left turn, drives 21 km and stops at Point Z. How far (shortest distance) and towards which direction should he drive in order to reach Point Y again? (All turns are 90-degree turns only unless specified.)

A
39 km towards the south
B
64 km towards the west
C
43 km towards the west
D
79 km towards the east
Question 2519
Arithmetic

Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

A
KNI
B
MPK
C
QTP
D
ORM
Question 2520
Arithmetic

Which Indian Constitutional Amendment Act have decreased the Fundamental Rights from seven to six?

A
35th Constitutional Amendment Act
B
76th Constitutional Amendment Act
C
44th Constitutional Amendment Act
D
42nd Constitutional Amendment Act
Question 2521
Arithmetic

Suzanne Collins' novel published in 2021 is titled:

A
The Crimson Rivers
B
Sunrise on the Reaping
C
Léon: The Professional
D
Le Grand Bleu
Question 2522
Arithmetic

What is the median of the following distribution? Class 120-170 170-220 220-270 270-320 320-370 Frequency 18 34 17 13 22

A
227
B
220
C
224
D
216
Question 2523
Arithmetic

What percentage of the workforce in India was self-employed in 2023-24, reflecting a growing trend towards entrepreneurship, as per the Economic Survey Report, 2024-25?

A
52.6 %
B
58.4 %
C
48.2 %
D
62.8 %
Question 2524
Arithmetic

In a certain code language, 'A + B' means 'A is the mother of B' 'A - B' means 'A is the brother of B' 'A x B' means 'A is the wife of B' 'A ÷ B' means 'A is the father of B' Based on the above, how is P related to T if 'P ÷ Q + R - S x T'?

A
Wife's mother's father
B
Wife's sister's husband
C
Son's daughter's husband
D
Wife's father's mother
Question 2525
Arithmetic

A, B, C, D, E, F, and G are sitting around a circular table facing the centre. Only C sits between A and E. E sits third to the left of D. B sits to the immediate left of D. G is not an immediate neighbour of E. How many people sit between C and G when counted from the right of C?

A
Four
B
Two
C
Three
D
One