RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 1776
Arithmetic
What happens when you press the Delete key after selecting a file in File Explorer in Windows OS?
A
The file is opened.B
The file is renamed.C
The file is permanently deleted.D
The file is sent to the Recycle Bin.Question 1777
Arithmetic
A, B, C, D, E and F live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. The product of floors on which F and E live is 15. C lives immediately above B. The sum of floors on which D and E live is 7. How many people live between B and D?
A
3B
2C
1D
4Question 1778
Arithmetic
Who authored the book 'Hind Swaraj', which outlined the principles of non-violent resistance and self-rule?
A
Bal Gangadhar TilakB
Mahatma GandhiC
Gopal Krishna GokhaleD
Jawaharlal NehruQuestion 1779
Arithmetic
What is the fundamental difference between a 'cold boot' and a 'warm boot' of a computer system?
A
A cold boot preserves the current state of applications, while a warm boot closes them.B
A cold boot restarts the operating system from a powered-off state, while a warm boot restarts it from a running state.C
A cold boot is initiated by the user, while a warm boot is initiated by the operating system due to an error.D
A cold boot only reloads the kernel, while a warm boot reinitializes all hardware components.Question 1780
Arithmetic
Eklavya Model Residential Schools (EMRSs), the Government of India's education initiatives for tribal communities, were introduced in which year?
A
2018-19B
1974-75C
2014-15D
1997-98Question 1781
Arithmetic
Seven people, I, J, K, L, O, P and Q are sitting in a row, facing north. Only five people sit between L and Q. P sits to the immediate left of Q. Only one person sits between P and I. O sits at some place to the left of K but at some place to the right of J. Who sits third from the left end of the line?
A
PB
QC
OD
JQuestion 1782
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
NQ - RMB
NM - POC
SR - UTD
UT - WVQuestion 1783
Arithmetic
Who will be the first Indian astronaut to travel to the International Space Station (ISS) as part of Axiom Mission 4?
A
Ashish KhannaB
Shubhanshu ShuklaC
Sunita WilliamsD
Rakesh SharmaQuestion 1784
Arithmetic
Which of the following ratios is greatest?
A
41 : 64B
50 : 59C
26 : 90D
40 : 70Question 1785
Arithmetic
What was the theme of the 18th Pravasi Bharatiya Divas (PBD) Convention held in January 2021?
A
Strengthening Bonds: The Indian Diaspora and India@75B
Redefining Engagement with the Indian DiasporaC
Engaging Diaspora for a Self-Reliant IndiaD
Diaspora's contribution to a Viksit BharatQuestion 1786
Arithmetic
AB is parallel to CD. A transversal PQ intersects AB and CD at E and F, respectively, and $\angle PEB = 59°$. G is a point between AB and CD such that $\angle BEG = 50°$ and $\angle GFE = 33°$. What is the measure of $\angle EGF$?
A
76°B
80°C
74°D
88°Question 1787
Arithmetic
Which state has the longest coastline in mainland India?
A
Andhra PradeshB
Tamil NaduC
GujaratD
MaharashtraQuestion 1788
Arithmetic
Which of the following numbers is divisible by 7 ?
A
894B
87C
875D
687Question 1789
Arithmetic
Bhawani Pathak and Devi Choudhurani were famous leaders associated with which of the following?
A
Indigo RebellionB
Munda RebellionC
Chuar RebellionD
Fakir and Sanyasi RebellionQuestion 1790
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
PS - QTB
KN - LOC
GJ - HKD
DH - FPQuestion 1791
Arithmetic
What should come in place of the question mark (?) in the given series? 1001 1000 997 992 985 ?
A
975B
976C
978D
977Question 1792
Arithmetic
L, M, N, O, P, Q, and R are sitting around a circular table facing the centre. M is sitting to the immediate right of Q and immediate left of O. N is sitting to the immediate right of O. P is sitting to the immediate left of L. R is sitting to the immediate right of L and immediate left of Q. The position of how many persons will remain unchanged if all the persons are arranged in alphabetical order in clockwise direction starting from L (including L)?
A
4B
5C
1D
3Question 1793
Arithmetic
According to the Future of Jobs Report 2021, which of the following is identified as the most transformative trend for businesses by 2030?
A
Robotics and automationB
Energy generation and storageC
Health and information processingD
Broadening digital accessQuestion 1794
Arithmetic
A boat takes 51 minutes to go 10.2 km upstream. The ratio of the speed of the boat in still water to that of the stream is 7: 6. How much total time (in hours) will the boat take to go 17.7 km upstream and 66.3 km downstream?
A
3.4B
2.1C
1.9D
0.3Question 1795
Arithmetic
The sides (in cm) of a right triangle are $(x – 13)$, $(x – 26)$ and $x$. Its area (in cm²) is:
A
999B
1014C
1010D
1012Question 1796
Arithmetic
If 24 is subtracted from three times an unknown number, the difference is 258. What is the unknown number?
A
78B
70C
94D
82Question 1797
Arithmetic
Which of the following actors was honoured with the 2021 International Goya Award for his contributions to global cinema?
A
Sigourney WeaverB
Richard GereC
Cate BlanchettD
Juliette BinocheQuestion 1798
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
SUPB
NPKC
PRVD
GIDQuestion 1799
Arithmetic
Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order. Only four boxes are kept between D and F. Only A is kept above D. Only two boxes are kept between C and G. E is kept immediately above B. G is not kept immediately above E. How many boxes are kept below E?
A
1B
2C
4D
3Question 1800
Arithmetic
WJ 15 is related to UN 11 in a certain way. In the same way, QH 8 is related to OL 4. To which of the given options is RI 3 related, following the same logic?
A
IN -9B
PL -7C
TR -5D
PM -1