RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 26
Arithmetic
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements. Statements: Some kings are drills. All clamps are drills. Conclusions: (I) Some kings are clamps. (II) All drills are clamps.
A
Only conclusion (II) follows.B
Both conclusions (I) and (II) follow.C
Only conclusion (I) follows.D
Neither conclusion (I) nor (II) follows.Question 27
Arithmetic
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged? 692 − 438 ÷ 1488 × 372 + 257 ÷ 621 × 69 = ?
A
113B
131C
313D
311Question 28
Arithmetic
Which of the following observations indicates that a chemical reaction has taken place?
A
Change in temperatureB
Change in shapeC
No change in textureD
Change in sizeQuestion 29
Arithmetic
What is the generally accepted maximum size for email attachments across major email providers?
A
100MBB
25MBC
50MBD
10MBQuestion 30
Arithmetic
Which of the following days is observed on 1 January every year?
A
World Health DayB
International Yoga DayC
Earth DayD
Global Family DayQuestion 31
Arithmetic
Which country will host the 2034 FIFA World Cup?
A
Saudi ArabiaB
BrazilC
RussiaD
QatarQuestion 32
Arithmetic
The marked price of a shirt is ₹1,200. A shopkeeper offers two successive discounts of 5% and 15% on the marked price. By how many rupees is the selling price less than the marked price?
A
₹231B
₹141C
₹131D
₹241Question 33
Arithmetic
A question is followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and decide the appropriate answer. What is Rahul's age(in years)? Statements: I. Rahul was born when his father was 33 years old. II. Rahul is 29 years younger than his mother.
A
Data in Statement II alone is sufficient to answer the question while data in statement I is notB
Both statements I and II together (and not statement I alone or statement II alone) are sufficient to answer the question.C
Both statements I and II together are NOT sufficient to answer the question D
Data in statement I alone is sufficient to answer the question while data in statement II is notQuestion 34
Arithmetic
Infant mortality rate is the number of infants per thousand who die before reaching _______ year(s) of age.
A
threeB
oneC
twoD
sixQuestion 35
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
RX - MSB
NR - GLC
MF - HAD
IO - DJQuestion 36
Arithmetic
In August 2021, India launched its first Artificial Intelligence (AI)-powered Anganwadi at which location, marking a major advancement in early childhood education?
A
Pipariya village, Madhya PradeshB
Khargone village, MaharashtraC
Waddhamna village, Nagpur district, MaharashtraD
Dharampur village, GujaratQuestion 37
Arithmetic
In a certain code, 'food is tasty' is coded as 'gm rt pj', 'snack is good' is coded as 'xl rt bn', and 'tasty good meal' is coded as 'pj bn dv'. What is the code for 'meal' in that code? (All codes are two-letter codes.)
A
bnB
dvC
rtD
pjQuestion 38
Arithmetic
A trader gives 10% discount on the marked price of an article and gives 4 articles free for buying 15 articles and gains 35% in the entire transaction. Assuming a customer pays for 15 articles, the marked price of an article is what percentage more than its cost price?
A
90%B
89%C
95%D
94%Question 39
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
NSSB
LPQC
XBCD
SWXQuestion 40
Arithmetic
Which of the following Articles of the Indian Constitution automatically suspends the Fundamental Rights during emergencies?
A
359B
356C
352D
358Question 41
Arithmetic
The number 977340 is divisible by:
A
35B
24C
37D
34Question 42
Arithmetic
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some calculators are stones. All calculators are pens. No calculator is an octopus. Conclusions: (I): No octopus is a stone. (II): Some pens are octopuses.
A
Only conclusion (I) follows B
Neither conclusion (I) nor (II) followsC
Only conclusion (II) followsD
Both conclusions (I) and (II) followQuestion 43
Arithmetic
The 'Chennai Port' is located along which of the following water bodies?
A
Andaman SeaB
Arabian SeaC
Bay of BengalD
Gulf of MannarQuestion 44
Arithmetic
What will come in the place of the question mark (?) in the following equation, if '+' and '-' are interchanged and 'x' and '÷' are interchanged? $26+8\times4-10\div5=?$
A
75B
73C
77D
74Question 45
Arithmetic
Who among the following is credited with the composition of a text called 'Gatha Saptasati' or 'Saptasati'?
A
SrimukhaB
HalaC
GautamiputraD
Satakarni IQuestion 46
Arithmetic
The ratio of the cost prices of articles X and Y is 3: 7. A man earns a profit of 14% by selling X and loses 11% by selling Y. What is his gain/loss percentage in the entire transaction?
A
Gain, 3.5%B
Loss, 3%C
Loss, 3.5%D
Gain, 5%Question 47
Arithmetic
On 3 June 2021, India secured the presidency of which international organisation, defeating Austria with 87 out of 141 votes?
A
United Nations Public Administration Network (UNPAN)B
International Institute of Administrative Sciences (IIAS) C
Commonwealth Association for Public Administration (CAPA)D
Global Institute of Governance and Public Administration (GIGPA)Question 48
Arithmetic
On 3 March 2021, the world observed World Wildlife Day with which theme?
A
Recovering Key Species for Ecosystem RestorationB
Forests and Livelihoods: Sustaining People and PlanetC
Wildlife Conservation Finance: Investing in People and PlanetD
Partnerships for Wildlife ConservationQuestion 49
Arithmetic
A, B, C, D, E, F, G and H are sitting around a square table facing the centre of the table. Some of them are sitting at the corners while some are sitting at the exact centre of the sides. F sits second to the right of G. F sits at one of the corners. Only three people sit between G and E when counted from the left of G. H sits third to the left of E. Only three people sit between H and B when counted from the left of H. C sits second to the right of B. D is not an immediate neighbour of E. How many people sit between E and D, when counted from the left of D?
A
NoneB
OneC
TwoD
More than twoQuestion 50
Arithmetic
In the following series, only one letter-cluster is incorrect. Select the INCORRECT letter-cluster. HQK KNN NKQ QHS TEW WBZ
A
NKQB
TEWC
QHSD
WBZ