RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 2826
Arithmetic
Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? JN28 IM40 HL52 GK64?
A
FI76B
FJ77C
FI77D
FJ76Question 2827
Arithmetic
What will come in place of the question mark (?) in the following equation if '÷' and '−' are interchanged and '×' and '+' are interchanged? 4320 − 96 × 37 + 21 ÷ 372 = ?
A
822B
450C
1350D
733Question 2828
Arithmetic
Which of the following is a mineral-based industry that uses ore or other minerals as raw materials?
A
SugarB
Iron and steelC
TextileD
RubberQuestion 2829
Arithmetic
Kalpana and Sudha got 624 and 720 marks, respectively, in the same examination. If Kalpana scored 26% marks, then what is the percentage of marks scored by Sudha?
A
30%B
29%C
33%D
27%Question 2830
Arithmetic
Labour reforms have remained a key agenda in the post-1991 economic policy landscape. How many labour codes were consolidated by the Indian government under the labour reforms enacted in 2019-2020?
A
FiveB
ThreeC
FourD
TwoQuestion 2831
Arithmetic
Which of the given 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 ::? #: QVS :: GLI: %
A
# = LPQ, % = LKPB
# = LQN, % = LQNC
# = PMN, % = PJYD
# = KOJ, % = HGTQuestion 2832
Arithmetic
Refer to the following number and symbol series given below and answer the question that follows. Counting to be done from left to right only. (NOTE: All numbers are single digit numbers only.) (Left) 9 # 2 6 7 © 6 8 & © $ & 3 9 1 7 $ 5 # @ * 4 (Right) How many such numbers are there, each of which is immediately preceded by a symbol and also immediately followed by a symbol?
A
0B
2C
3D
1Question 2833
Arithmetic
Mr C starts from Point A and drives 5 km towards the West. He then takes a right turn, drives 11 km, turns right and drives 3 km. He then takes a left turn and drives 4 km. He then takes a right turn, drives 3 km. He then takes a final right turn drives 15 km and stops at Point B. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are 90 degrees turns only unless specified)
A
1 km towards the WestB
1 km towards the EastC
1 km towards the NorthD
3 km towards the SouthQuestion 2834
Arithmetic
How can rivers contribute to the formation of a coastal plain?
A
By evaporatingB
By depositing sediments over timeC
By increasing sea levelsD
By creating fault linesQuestion 2835
Arithmetic
If a sum of ₹8,20,000 is invested for a year at 6% per annum compounded half yearly, then find the compound interest.
A
₹50,028B
₹49,938C
₹49,685D
₹48,444Question 2836
Arithmetic
FBHP is related to JFLT in a certain way based on the English alphabetical order. In the same way, VRXF is related to ZVBJ. To which of the following options is HDJR related, following the same logic?
A
LVHNB
LHVNC
LHNVD
LVNHQuestion 2837
Arithmetic
Which of the following statements is/are correct regarding the recent Supreme Court developments on bail under the PMLA (Prevention of Money Laundering Act, 2002) in 2024-25? The Supreme Court has clarified that prolonged incarceration without trial can be a valid ground for granting bail under PMLA-2002, despite the twin conditions under Section 45. In Arvind Kejriwal's case, the Court ruled that the legality of arrest must also consider the "need and necessity" of arrest, in addition to the standard "reasons to believe" clause. The Court has held that "bail is the exception, jail the rule", which remains applicable in money laundering cases.
A
Statement 1 onlyB
Statements 2 and 3 onlyC
Statements 1, 2 and 3D
Statements 1 and 2 onlyQuestion 2838
Arithmetic
If 1 is added to each even digit and each odd digit in the number 57831426, what will be the sum of the first two and the last two digits from the left in the new number thus formed?
A
26B
20C
24D
22Question 2839
Arithmetic
A group of numbers and symbols is coded using letter codes as per the codes given below and the conditions that follow. Study the given codes and conditions and answer the question that follows. Note: If none of the conditions apply, then codes for the respective number/symbol are to be followed directly as given in the table. Number/symbol 7 % 2 5 * $ 3 ^ # 4 + 6 9 8 Code U G L F B M C H N D J P E K Conditions: I) If the first element is a symbol and the last a number, then 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 element is an even number, then the first and last elements are to be coded as @. III) If both the second and third elements are perfect square roots, the third element is to be coded as the code for the second element. What will be the code for 536+8?
A
@CPJ@B
@PCJ@C
FCPJKD
KCPJFQuestion 2840
Arithmetic
Which river is associated with the Mohenjo-daro site?
A
SaraswatiB
GangaC
YamunaD
IndusQuestion 2841
Arithmetic
Under which provision can the Governor extend judicial service rules to certain magistrates?
A
Article 234B
Article 142C
Article 233D
Article 237Question 2842
Arithmetic
Which moderate leader, often referred to as the 'Grand Old Man of India,' became the first Indian elected to the British House of Commons and helped shape the early nationalist movement?
A
Dadabhai NaorojiB
Rash Behari GhoshC
Gopal Krishna GokhaleD
Pherozeshah MehtaQuestion 2843
Arithmetic
Which of the following correctly differentiates between absolute poverty and relative poverty?
A
There is no difference between the two.B
Absolute poverty is subjective; relative poverty is objective.C
Absolute poverty is based on income inequality; relative poverty is not.D
Absolute poverty uses a fixed threshold; relative poverty compares individuals within a society.Question 2844
Arithmetic
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (Left) 7 & 9 ^ # 1 * 5 ≺ 2 6 ≡ 4 ∆ 3 $ @ 8 (Right) How many such symbols are there, each of which is immediately preceded by an odd number but NOT immediately followed by an even number? (Note: a combination of three elements should be considered while answering this question.)
A
TwoB
ThreeC
OneD
More than threeQuestion 2845
Arithmetic
Which of the following mountain ranges contains the 'Valley of Flowers' National Park?
A
Pir PanjalB
KarakoramC
DhauladharD
West HimalayaQuestion 2846
Arithmetic
Which Indian bank become the first to launch near-real-time, 24/7 programmable USD clearing capabilities using JP Morgan's Kinexys Digital Payments platform in March 2021?
A
Axis BankB
Indian BankC
Bandhan BankD
State Bank of IndiaQuestion 2847
Arithmetic
During summer, the Thar Desert becomes a low-pressure zone due to which of the following?
A
Intense solar heatingB
Frontal cyclonesC
Western disturbancesD
Coastal humidityQuestion 2848
Arithmetic
What is the length of the hyperloop test track launched by IIT Madras in 2021?
A
1 kmB
100 mC
422 mD
10 kmQuestion 2849
Arithmetic
For which discovery was Paul Ehrlich awarded the Nobel Prize in Medicine in 1908?
A
Antibacterial effect of sulpha drugsB
Penicillin for treating infectionsC
Theoretical basis for immunologyD
Use of azodyes in textilesQuestion 2850
Arithmetic
Which statement best explains why removing all desktop icons does NOT impact the functionality of the applications in Windows OS?
A
The desktop is a virtual memory area where applications run in the background.B
Desktop icons are system-critical files required to run applications.C
Desktop icons are only visual shortcuts and not the actual application files.D
Windows OS duplicates all application files in the desktop directory.