RRB-NTPC 2021 Mathematics

Practice subject-wise previous year questions

Question 2776
Arithmetic

Seven friends, E, F, G, H, I, J and Q, are sitting in a row facing north. Only three people sit to the left of Q. Only H sits to the right of E. Only three people sit between E and J. I sits at some place to the left of F but at some place to the right of G. How many people sit between G and F?

A
Two
B
Three
C
Four
D
One
Question 2777
Arithmetic

The simplified value of $285 - 6 \times (23 + 19) + 83$ is:

A
110
B
106
C
107
D
116
Question 2778
Arithmetic

In November 2024, which Indian state conducted an Olympic-style school sports event with participation from Gulf-based Indian schools?

A
Tamil Nadu
B
Delhi
C
Maharashtra
D
Kerala
Question 2779
Arithmetic

What is one of the key advantages of the parliamentary system in ensuring smooth governance?

A
The executive has absolute power over the legislature.
B
The judiciary controls both the legislature and the executive.
C
The Prime Minister can dissolve the legislature at will.
D
It ensures harmony and cooperation between the legislature and the executive.
Question 2780
Arithmetic

Find the greatest number by which when the numbers 247 and 189 are divided, it leaves remainders 3 and 6, respectively.

A
62
B
63
C
61
D
64
Question 2781
Arithmetic

Two taps can fill a cistern in 3 hours and 36 hours, respectively. A third tap can empty it in 4 hours. How long (in hours) will it take to fill two-third of the empty cistern, if all of them are opened together?

A
24
B
18
C
6
D
12
Question 2782
Arithmetic

MJGT is related to QNKX in a certain way based on the English alphabetical order. In the same way, CZWJ is related to GDAN. To which of the following options is OLIV related, following the same logic?

A
SMPZ
B
SPMZ
C
SPZM
D
SMZP
Question 2783
Arithmetic

Seven boxes, A, B, C, D, E, F and Y, are kept one over the other but not necessarily in the same order. Only D is kept above F. Only three boxes are kept between D and A. Only B is kept below E. Y is not kept immediately above A. How many boxes are kept between C and B?

A
Four
B
Three
C
Two
D
One
Question 2784
Arithmetic

Which of the following pairs of reform organisations and their founders is correctly matched?

A
Brahmo Samaj – Dayanand Saraswati
B
Arya Samaj - Raja Ram Mohan Roy
C
Satya Shodhak Samaj - Jyotiba Phule
D
Bahujan Samaj - BR Ambedkar
Question 2785
Arithmetic

In November 2024, who was named Indian Film Personality of the Year at the International Film Festival of India (IFFI)?

A
Vikrant Massey
B
Manoj Bajpayee
C
Nawazuddin Siddiqui
D
Ayushmann Khurrana
Question 2786
Arithmetic

Govind invested some money in a bank at 4% per annum rate of interest. What would be the corresponding simple interest (in ₹) if after 2 years, Govind got ₹280.5 as compound interest, considering annual compounding?

A
275
B
290
C
270
D
285
Question 2787
Arithmetic

If 2 is added to each even digit and 1 is subtracted from each odd digit in the number 4123957, what will be the difference between the greatest and smallest digits in the new number thus formed?

A
6
B
4
C
2
D
8
Question 2788
Arithmetic

The present cost of a hospital is ₹1,82,590. After a year, its cost increased to ₹1,95,382. The percentage increase (rounded off to the nearest integer) in the cost of the hospital is:

A
5%
B
16%
C
3%
D
7%
Question 2789
Arithmetic

When was the designation of the Governor General in India promoted as a Viceroy or Crown's representative?

A
Year 1935
B
Year 1919
C
Year 1833
D
Year 1858
Question 2790
Arithmetic

What does the horizontal row in the periodic table represent?

A
Groups
B
Columns
C
Periods
D
Blocks
Question 2791
Arithmetic

In the context of computer hardware components, what is the primary function of ROM?

A
It physically supports all internal hardware modules.
B
It holds essential firmware required for booting the system.
C
It stores temporary data used during system processing.
D
It executes programs and handles arithmetic operations.
Question 2792
Arithmetic

Where is the audit report of an apex co-operative society required to be presented?

A
District Office
B
State Legislature
C
High Court
D
State Secretariat
Question 2793
Arithmetic

What is the mode of the data given below? [Give your answer correct to 2 decimal places.] Age in years 15-25 25-35 35-45 45-55 55-65 65-75 75-85 No. of patients 14 32 39 38 10 36 22

A
40.86
B
60.47
C
43.75
D
36.08
Question 2794
Arithmetic

If 48, 96, 20, and y are in proportion, then the value of y is:

A
38
B
37
C
34
D
40
Question 2795
Arithmetic

Which of the following was the theme of National Science Day 2021, celebrated on the 28th of February?

A
Fostering Scientific Excellence through Youth-Driven Research and Innovation in India
B
Building a Developed Nation through Scientific Thinking and Modern Technology
C
Empowering Indian Youth for Global Leadership in Science and Innovation for Viksit Bharat
D
Advancing Scientific Vision through Innovation and Collaborative Growth in Bharat
Question 2796
Arithmetic

The Mauryan period saw the development of which script for inscriptions?

A
Pali
B
Brahmi
C
Kharosthi
D
Grantha
Question 2797
Arithmetic

The Indus Valley Civilization flourished around:

A
2500-1800 BCE
B
5000-4000 BCE
C
1000-500 BCE
D
900-200 BCE
Question 2798
Arithmetic

In finding the HCF of two numbers by division method, the quotients are 1, 5, and 8, respectively, and the last divisor is 57. What is the LCM of the two numbers?

A
114509
B
114517
C
114511
D
114513
Question 2799
Arithmetic

Which country is developing the 'Gelephu Mindfulness City' to promote economic growth, wellness, and sustainability?

A
Cambodia
B
Bhutan
C
Nepal
D
Sri Lanka
Question 2800
Arithmetic

What should come in place of the question mark (?) in the given series? 356, 333, 300, ?, 204, 141

A
237
B
247
C
257
D
227