RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 1726
Arithmetic
From which state to which state do the Eastern Coastal Plains of India extend?
A
Gujarat to KeralaB
West Bengal to Tamil NaduC
Maharashtra to Andhra PradeshD
Odisha to KarnatakaQuestion 1727
Arithmetic
Sundar starts from point A and drives 12 km towards the east. He then takes a left turn, drives 9 km, turns left and drives 13 km. He then takes a left turn and drives 11 km. He takes a final left turn, drives 1 km and stops at point P. How far (shortest distance) and towards which direction should he drive in order to reach point A again? (All turns are 90 degree turns only unless specified.)
A
2 km to the southB
1 km to the northC
2 km to the northD
1 km to the southQuestion 1728
Arithmetic
Salil's salary was first reduced by 15% and subsequently raised by 10%. What percentage was his final salary lower compared to his initial salary?
A
10%B
1.5%C
6.5%D
15%Question 1729
Arithmetic
If 260 is the mean proportion between x and 338, what is the value of x?
A
200B
198C
199D
201Question 1730
Arithmetic
Which of the following components is/are NOT a part of the Central Processing Unit (CPU)?
A
Arithmetic Logic Unit (ALU)B
Graphic CardC
Control Unit (CU)D
RegistersQuestion 1731
Arithmetic
A class of 30 students appeared in a test. The average score of 12 students is 60, and that of the rest is 62. What is the average score of the class?
A
61.2B
62.2C
60.2D
59.2Question 1732
Arithmetic
Study the given Venn diagram carefully and answer the question that follows. The numbers in different sections indicate the number of persons. How many chefs are there who are also teachers but not lawyers?
A
8B
9C
5D
7Question 1733
Arithmetic
The average of first 14 whole numbers is:
A
6.5B
7.5C
7D
5.5Question 1734
Arithmetic
Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::? # : VEC :: BNW: %
A
# = XHA, % = ZKYB
# = ZKY, % = FTSC
# = FTS, % = XHAD
# = DQU, % = XHAQuestion 1735
Arithmetic
Which of the following Indian states does NOT have a coastline?
A
GujaratB
RajasthanC
Andhra PradeshD
OdishaQuestion 1736
Arithmetic
How many medals did India win in total at the World Para Athletics Grand Prix 2021?
A
120B
150C
134D
180Question 1737
Arithmetic
The marked price of a desk is ₹7,725, which is 25% above the cost price. It is sold at a discount of 4% on the marked price. Find the profit percentage.
A
21%B
20%C
19%D
22%Question 1738
Arithmetic
From a taxi stand, two cabs start at a speed of 74 km/hr at an interval of 28 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 10 minutes. Find the speed (in km/hr) of the man.
A
128.8B
133.2C
143.1D
125.5Question 1739
Arithmetic
Select the number from among the given options that can replace the question mark (?) in the following series. 37 55 66 84 95 113 ?
A
166B
145C
124D
131Question 1740
Arithmetic
In a certain code language, 'GIVE' is coded as '4628' and 'VOLT' is coded as '3567'. What is the code for 'V' in the given code language?
A
2B
5C
6D
3Question 1741
Arithmetic
What is the primary function of the CPU in a computer system?
A
Connect input and output devicesB
Execute instructions and process dataC
Manage the power supplyD
Store data permanentlyQuestion 1742
Arithmetic
Which princely ruler patronised the Sikh community and institutions?
A
Bhupinder Singh of PatialaB
Gaikwad of BarodaC
Raja of TravancoreD
Maharaja of JaipurQuestion 1743
Arithmetic
What is the total length of the Mahanadi river?
A
351 kmB
567 kmC
200 kmD
851 kmQuestion 1744
Arithmetic
Atul's salary is ₹10,000 per month. He spends ₹6,000 on house rent and ₹2,500 on bills, and the rest of the amount is his monthly savings. Find his savings (in ₹) in a year, if in the month of his birthday, he spent all his monthly savings on birthday celebrations.
A
18,000B
13,500C
16,500D
15,000Question 1745
Arithmetic
Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side? # : FLN :: TXB : %
A
# = TXB, % = FLNB
# = WZD, % = GMQC
# = SXA, % = LNPD
# = UXC, % = HOPQuestion 1746
Arithmetic
Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair 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
OP - JKB
KL - FGC
XY - STD
HK - LPQuestion 1747
Arithmetic
One pipe can fill the tank in 10 minutes while another pipe can empty completely filled tank in 20 minutes. If both the pipes are operated together on empty tank, how long (in minutes) will it take to fill the tank completely?
A
22B
21C
23D
20Question 1748
Arithmetic
If S = −, Q = ×, R = ÷, P = + , what will be the value of: 1 P 4 S 5 R 2 Q 2 S 4 = ?
A
-2B
-4C
2D
4Question 1749
Arithmetic
What was the Infant Mortality Rate (IMR) in India according to the Sample Registration System (SRS), 2019?
A
32 per 1000 live birthsB
34 per 1000 live birthsC
30 per 1000 live birthsD
28 per 1000 live birthsQuestion 1750
Arithmetic
P, Q, R, S, T, U and V are sitting around a circular table facing the centre. Only one person sits between R and T when counted from the left of T. Q sits third to the right of P. U sits third to the left of V. Q sits to the immediate right of U. S is not an immediate neighbour of U. How many people sit between S and T when counted from the right of S?
A
4B
2C
3D
1