UPSC Prelims 2020

General Studies Paper II (CSAT)

80 questions, 2 hours. Open a question for its answer and why.

1. Question 1 · Reading Comprehension

   

   Which one of the following is best implied in the passage?

   aStrong measures need to be taken to reduce the rural to urban migration of labour.

   bThe working condition in construction and unregistered manufacturing needs to be improved.

   cService sector has been reducing the problem of unemployment.

   dIncreased social sector spending is imperative for large-scale job creation.
2. Question 2 · Reading Comprehension

   

   On the basis of the above passage, the following assumptions have been made :

   1. 1.State should have some institutions to ensure its appropriate role in a digital society.
   2. 2.State should ensure that private parties do not violate the citizens' right to privacy.
   3. 3.Digital economy is not compatible with the idea of not violating the citizens' privacy.

   Which of the above assumptions is/are valid?

   a1 and 2

   b3 only

   c1 and 3

   d2 only
3. Question 3 · Reading Comprehension

   

   Which one of the following is the most logical and rational inference that can be made from the above passage?

   aRivers and other wetlands should be protected under Ramsar Convention.

   bEngineering water systems should be modernized and further augmented.

   cWetlands need to be reinforced as more than just open sources of water.

   dWater supply should not be free of cost so as to prevent its misuse or overuse.
4. Question 4 · Reading Comprehension

   

   Which one of the following statements best implies the suggestion given by the author of the passage?

   aDistribute your wealth across different kinds of assets so that your risks would be minimized.

   bRisk-taking behaviour should be a necessary component of your personality if you want to generate wealth.

   cWhile making investments, find a trustworthy asset management organization which would manage your wealth for you.

   dYou should know that investing your money is a risky business.
5. Question 5 · Reading Comprehension

   

   With reference to the above passage, the following assumptions have been made :

   1. 1.Biotechnology regulation is an evolving process.
   2. 2.Participation of people is needed in policy decisions regarding biotechnology regulation.
   3. 3.Biotechnology regulation should take into account socio-economic aspects in decision-making.
   4. 4.Wider involvement of political executive in biotechnology regulation improves its effectiveness in dealing with the country's trade policies and international obligations.

   Which of the above assumptions are valid?

   a1, 2 and 4 only

   b1 and 3 only

   c2, 3 and 4 only

   d1, 2, 3 and 4
6. Question 6 · Reading Comprehension

   

   Which one of the following statements best implies the crux of the passage?

   aPrecautionary principle is not given importance in current debate on developing GM crops.

   bBiotechnology is not currently used in climate change mitigation and adaptation mechanisms.

   cBiotechnology's role is not confined to the current priorities of developing GM crops.

   dThe negative impacts of biotechnology are not properly understood.
7. Question 7 · Basic Numeracy

   How many zeroes are there at the end of the following product? 1 × 5 × 10 × 15 × 20 × 25 × 30 × 35 × 40 × 45 × 50 × 55 × 60

   a10

   b12

   c14

   d15
8. Question 8 · Basic Numeracy

   Let XYZ be a three-digit number, where (X + Y + Z) is not a multiple of 3. Then (XYZ + YZX + ZXY) is not divisible by

   a3

   b9

   c37

   d(X + Y + Z)
9. Question 9 · Basic Numeracy

   Let p, q, r and s be natural numbers such that p - 2016 = q + 2017 = r - 2018 = s + 2019

   Which one of the following is the largest natural number?

   ap

   bq

   cr

   ds
10. Question 10 · Basic Numeracy

    How many five-digit prime numbers can be obtained by using all the digits 1, 2, 3, 4 and 5 without repetition of digits?

    aZero

    bOne

    cNine

    dTen
11. Question 11 · Basic Numeracy

    In the sum ⊗ + 1⊗ + 5⊗ + ⊗⊗ + ⊗1 = 1⊗⊗ for which digit does the symbol ⊗ stand?

    a2

    b3

    c4

    d5
12. Question 12 · Basic Numeracy

    If you have two straight sticks of length 7·5 feet and 3·25 feet, what is the minimum length can you measure?

    a0·05 foot

    b0·25 foot

    c1 foot

    d3·25 feet
13. Question 13 · Logical Reasoning and Mental Ability

    A simple mathematical operation in each number of the sequence 14, 18, 20, 24, 30, 32, ... results in a sequence with respect to prime numbers. Which one of the following is the next number in the sequence?

    a34

    b36

    c38

    d40
14. Question 14 · Basic Numeracy

    One page is torn from a booklet whose pages are numbered in the usual manner starting from the first page as 1. The sum of the numbers on the remaining pages is 195. The torn page contains which of the following numbers?

    a5, 6

    b7, 8

    c9, 10

    d11, 12
15. Question 15 · Logical Reasoning and Mental Ability

    Consider the following arrangement that has some missing letters : abab_b_bcb_dcdcded_d The missing letters which complete the arrangement are

    aa, b, c, d

    ba, b, d, e

    ca, c, c, e

    db, c, d, e
16. Question 16 · Basic Numeracy

    Let A3BC and DE2F be four-digit numbers where each letter represents a different digit greater than 3. If the sum of the numbers is 15902, then what is the difference between the values of A and D?

    a1

    b2

    c3

    d4
17. Question 17 · Data Interpretation

    Two Statements S1 and S2 are given below followed by a Question :

    1. S1There are not more than two figures on any page of a 51-page book.
    2. S2There is at least one figure on every page.
    3. QuestionAre there more than 100 figures in that book?

    Which one of the following is correct in respect of the above Statements and the Question?

    aBoth S1 and S2 are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question.

    bS1 alone is sufficient to answer the Question.

    cS1 and S2 together are not sufficient to answer the Question.

    dS2 alone is sufficient to answer the Question.
18. Question 18 · Basic Numeracy

    Consider the following data :

    	Average marks in English	Average marks in Hindi
    Girls	9	8
    Boys	8	7
    Overall average marks	8·8	x

    What is the value of x in the above table?

    a7·8

    b7·6

    c7·4

    d7·2
19. Question 19 · Logical Reasoning and Mental Ability

    A family of two generations consisting of six members P, Q, R, S, T and U has three males and three females. There are two married couples and two unmarried siblings. U is P's daughter and Q is R's mother-in-law. T is an unmarried male and S is a male. Which one of the following is correct?

    aR is U's husband.

    bR is S's wife.

    cS is unmarried.

    dNone of the above
20. Question 20 · Logical Reasoning and Mental Ability

    If in a particular year 12th January is a Sunday, then which one of the following is correct?

    a15th July is a Sunday if the year is a leap year.

    b15th July is a Sunday if the year is not a leap year.

    c12th July is a Sunday if the year is a leap year.

    d12th July is not a Sunday if the year is a leap year.
21. Question 21 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Relying on foreign investment in the long run is not an economically sound policy.
    2. 2.Policies must be undertaken to reduce volatility in foreign private investment.
    3. 3.Policies must be undertaken to strengthen domestic private investment.
    4. 4.Public investment should be given priority over private investment.
    5. 5.Substantial public investment in education and health should be undertaken.

    Which of the above assumptions is/are valid?

    a1, 2 and 4

    b1, 3 and 5

    c2, 4 and 5

    d3 only
22. Question 22 · Reading Comprehension

    

    With reference to the above passage, which of the following could be the most rational and practical implications for India?

    1. 1.Inter-linking of rivers should be undertaken.
    2. 2.A network of dams and canals should be built across the country for proper distribution of water.
    3. 3.Farmers should be provided easy loans for digging borewells.
    4. 4.Usage of water for agriculture should be regulated by law.
    5. 5.Distribution of river water among regions should be regulated by the Union Government.

    Select the correct answer using the code given below.

    a1 and 2

    b2, 4 and 5

    c1, 3 and 4

    d2, 3 and 5
23. Question 23 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Lower tax rates in a country invariably translate into greater investments in higher education.
    2. 2.Investment in the education of children ensures their economic freedom.
    3. 3.Economic freedom has a positive impact on building up human capital.

    Which of the above assumptions is/are valid?

    a1 only

    b2 only

    c3 only

    d1, 2 and 3
24. Question 24 · Reading Comprehension

    

    What is the most logical and crucial message conveyed by the passage?

    aUrban local bodies must recover costs through user charges.

    bUrban local bodies are not efficient enough to meet the water requirements of our cities.

    cWater shortage in our cities is a perennial problem that cannot be solved.

    dIn view of the water crisis in our cities, there is an urgent need to limit the population of cities by adopting an upper limit of population size.
25. Question 25 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Rich cities only can ensure sustainable delivery of water.
    2. 2.Sustainable delivery of water in cities means much more than supplying water to households.

    Which of the above assumptions is/are valid?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
26. Question 26 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Structural and rural transformation is impossible when farms are mainly small and marginal.
    2. 2.A good price incentive can trigger investments in agriculture.
    3. 3.India needs to build value chains for high-value agri-products like livestock and horticulture.
    4. 4.Higher global prices of agricultural commodities are essential for India's poverty reduction.

    Which of the above assumptions are valid?

    a1 and 3

    b2 and 4

    c2 and 3

    d3 and 4
27. Question 27 · Reading Comprehension

    

    Which one of the following statements best reflects the critical message of the passage?

    aIndia should create large-scale off-farm rural employment to reduce poverty in the near future.

    bIndia should create a large number of farmer producer companies.

    cPrivate investment in agriculture should be given priority over public investment.

    dInclusive agricultural growth is key to reduce poverty in the near future.
28. Question 28 · Data Interpretation

    Two Statements S1 and S2 are given below with regard to four numbers P, Q, R and S followed by a Question :

    1. S1R is greater than P as well as Q.
    2. S2S is not the largest one.
    3. QuestionAmong four numbers P, Q, R and S, which one is the largest?

    Which one of the following is correct in respect of the above Statements and the Question?

    aS1 alone is sufficient to answer the Question.

    bS2 alone is sufficient to answer the Question.

    cS1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question.

    dS1 and S2 together are not sufficient to answer the Question.
29. Question 29 · Data Interpretation

    Two Statements S1 and S2 are given below followed by a Question :

    1. S1n is a prime number.
    2. S2n leaves a remainder of 1 when divided by 4.
    3. QuestionIf n is a unique natural number between 10 and 20, then what is n?

    Which one of the following is correct in respect of the above Statements and the Question?

    aS1 alone is sufficient to answer the Question.

    bS2 alone is sufficient to answer the Question.

    cS1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question.

    dS1 and S2 together are not sufficient to answer the Question.
30. Question 30 · Data Interpretation

    Two Statements S1 and S2 are given below with regard to two numbers followed by a Question :

    1. S1Their product is 21.
    2. S2Their sum is 10.
    3. QuestionWhat are the two numbers?

    Which one of the following is correct in respect of the above Statements and the Question?

    aS1 alone is sufficient to answer the Question.

    bS2 alone is sufficient to answer the Question.

    cS1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question.

    dS1 and S2 together are not sufficient to answer the Question.
31. Question 31 · Logical Reasoning and Mental Ability

    A man walks down the backside of his house straight 25 metres, then turns to the right and walks 50 metres again; then he turns towards left and again walks 25 metres. If his house faces to the East, what is his direction from the starting point?

    aSouth-East

    bSouth-West

    cNorth-East

    dNorth-West
32. Question 32 · Logical Reasoning and Mental Ability

    Two Statements are given followed by two Conclusions : Statements : All numbers are divisible by 2. All numbers are divisible by 3.

    1. Conclusion–IAll numbers are divisible by 6.
    2. Conclusion–IIAll numbers are divisible by 4.

    Which of the above Conclusions logically follows/follow from the two given Statements?

    aOnly Conclusion–I

    bOnly Conclusion–II

    cNeither Conclusion–I nor Conclusion–II

    dBoth Conclusion–I and Conclusion–II
33. Question 33 · Logical Reasoning and Mental Ability

    Two Statements are given followed by two Conclusions : Statements : All cats are dogs. All cats are black.

    1. Conclusion–IAll dogs are black.
    2. Conclusion–IISome dogs are not black.

    Which of the above Conclusions logically follows/follow from the two given Statements, disregarding commonly known facts?

    aOnly Conclusion–I

    bOnly Conclusion–II

    cNeither Conclusion–I nor Conclusion–II

    dBoth Conclusion–I and Conclusion–II
34. Question 34 · Logical Reasoning and Mental Ability

    Consider the following sequence of numbers : 5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 How many odd numbers are followed by the odd number in the above sequence?

    a5

    b6

    c7

    d8
35. Question 35 · Logical Reasoning and Mental Ability

    A is 16th from the left end in a row of boys and V is 18th from the right end. G is 11th from A towards the right and 3rd from V towards the right end. How many boys are there in the row?

    a40

    b41

    c42

    dCannot be determined due to insufficient data
36. Question 36 · Data Interpretation

    Three Statements S1, S2 and S3 are given below followed by a Question :

    1. S1C is younger than D, but older than A and B.
    2. S2D is the oldest.
    3. S3A is older than B.
    4. QuestionWho among A, B, C and D is the youngest?

    Which one of the following is correct in respect of the above Statements and the Question?

    aS1 alone is sufficient to answer the Question.

    bS1 and S2 together are sufficient to answer the Question.

    cS2 and S3 together are sufficient to answer the Question.

    dS1 and S3 together are sufficient to answer the Question.
37. Question 37 · Basic Numeracy

    How many integers are there between 1 and 100 which have 4 as a digit but are not divisible by 4?

    a5

    b11

    c12

    d13
38. Question 38 · Basic Numeracy

    Let x, y be the volumes; m, n be the masses of two metallic cubes P and Q respectively. Each side of Q is two times that of P and mass of Q is two times that of P. Let u = m / x and v = n / y. Which one of the following is correct?

    au = 4v

    bu = 2v

    cv = u

    dv = 4u
39. Question 39 · Basic Numeracy

    The average age of a teacher and three students is 20 years. If all the three students are of same age and the difference between the age of the teacher and each student is 20 years, then what is the age of the teacher?

    a25 years

    b30 years

    c35 years

    d45 years
40. Question 40 · Basic Numeracy

    A person bought a car and sold it for ₹ 3,00,000. If he incurred a loss of 20%, then how much did he spend to buy the car?

    a₹ 3,60,000

    b₹ 3,65,000

    c₹ 3,70,000

    d₹ 3,75,000
41. Question 41 · Reading Comprehension

    

    Which one of the following statements best reflects the critical message of the passage?

    aFor introducing any foreign plant into a country, the soil and climate conditions of that country should be suitable.

    bAs a staple food of a country, tuber crops like potato cannot replace cereal crops.

    cSome of the fungal infections of plants cannot be prevented or stopped from spreading across large areas.

    dRelying on a homogeneous food source is not desirable.
42. Question 42 · Reading Comprehension

    

    With reference to the above passage, which of the following is/are the most rational and practical implication/implications?

    1. 1.India's Public Distribution System should be monitored by the Union Government.
    2. 2.Girls should be encouraged to delay marriage and first pregnancy.
    3. 3.Mothers should be encouraged to breastfeed their children immediately after birth.
    4. 4.The supply of safe drinking water and proper sanitation facilities to all should be ensured.
    5. 5.Authorities should ensure the vaccination as prescribed.

    Select the correct answer using the code given below.

    a1, 2, 3 and 4

    b2, 3, 4 and 5

    c1 only

    d3 and 5 only
43. Question 43 · Reading Comprehension

    

    Which of the following are the most rational inferences that can be made from the passage?

    1. 1.Farmers' income will be higher with pulse cultivation than with paddy cultivation.
    2. 2.Pulse cultivation causes less pollution as compared to paddy cultivation.
    3. 3.Pulse straw can be used to improve soil quality.
    4. 4.In the context of northern Indian agriculture, paddy straw has no usefulness.
    5. 5.Mechanized agriculture is the main cause for stubble burning.

    Select the correct answer using the code given below.

    a2, 3 and 5

    b1, 4 and 5

    c2 and 3 only

    d1 and 4 only
44. Question 44 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.High risks involved in holding maximum water in reservoirs are due to our over-dependence on hydropower projects.
    2. 2.Storage capacity of dams should not be fully used before or during monsoon season.
    3. 3.Role of dams in flood control is underestimated in India.

    Which of the above assumptions is/are valid?

    a1 and 2 only

    b2 only

    c3 only

    d1, 2 and 3
45. Question 45 · Reading Comprehension

    

    Which of the following is/are the most rational and logical inference/inferences that can be made from the passage?

    1. 1.It is essential to rethink and redefine the economic role of the State in the quest for development.
    2. 2.India has not made effective implementation of its policies in social sectors nor made sufficient investments in them.

    Select the correct answer using the code given below.

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
46. Question 46 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.India's economy needs to be greatly integrated with global economy so as to create large number of jobs and to sustain its growth momentum.
    2. 2.Economic liberalization would cause large economic growth which would reduce poverty and create sufficient employment in the long run.

    Which of the above assumptions is/are valid?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
47. Question 47 · Basic Numeracy

    A shop owner offers the following discount options on an article to a customer :

    1. 1.Successive discounts of 10% and 20%, and then pay a service tax of 10%
    2. 2.Successive discounts of 20% and 10%, and then pay a service tax of 10%
    3. 3.Pay a service tax of 10% first, then successive discounts of 20% and 10%

    Which one of the following is correct?

    a1 only is the best option for the customer.

    b2 only is the best option for the customer.

    c3 only is the best option for the customer.

    dAll the options are equally good for the customer.
48. Question 48 · Logical Reasoning and Mental Ability

    The letters from A to Z are numbered from 1 to 26 respectively. If GHI = 1578 and DEF = 912, then what is ABC equal to?

    a492

    b468

    c262

    d246
49. Question 49 · Logical Reasoning and Mental Ability

    What is the missing term @ in the following? ACPQ : BESU :: MNGI : @

    aNPJL

    bNOJM

    cNPIL

    dNPJM
50. Question 50 · Basic Numeracy

    What is the largest number among the following?

    a(1/2)^-6

    b(1/4)^-3

    c(1/3)^-4

    d(1/6)^-2
51. Question 51 · Basic Numeracy

    What is the greatest length x such that 3 1/2 m and 8 3/4 m are integral multiples of x?

    a1 1/2 m

    b1 1/3 m

    c1 1/4 m

    d1 3/4 m
52. Question 52 · Data Interpretation

    Consider the following data :

    Year	Birthrate	Death rate
    1911–1921	48·1	35·5
    1921–1931	46·4	36·3
    1931–1941	45·2	31·2
    1941–1951	39·9	27·4
    1951–1961	41·7	22·8
    1961–1971	41·1	18·9
    1971–1981	37·1	14·8

    For which period was the natural growth rate maximum?

    a1911–1921

    b1941–1951

    c1961–1971

    d1971–1981
53. Question 53 · Basic Numeracy

    The recurring decimal representation 1·272727... is equivalent to

    a13/11

    b14/11

    c127/99

    d137/99
54. Question 54 · Basic Numeracy

    What is the least four-digit number when divided by 3, 4, 5 and 6 leaves a remainder 2 in each case?

    a1012

    b1022

    c1122

    d1222
55. Question 55 · Basic Numeracy

    In adult population of a city, 40% men and 30% women are married. What is the percentage of married adult population if no man marries more than one woman and no woman marries more than one man; and there are no widows and widowers?

    a33 1/7%

    b34%

    c34 2/7%

    d35%
56. Question 56 · Basic Numeracy

    What is the remainder when 51 × 27 × 35 × 62 × 75 is divided by 100?

    a50

    b25

    c5

    d1
57. Question 57 · Basic Numeracy

    A sum of ₹ 2,500 is distributed among X, Y and Z in the ratio 1/2 : 3/4 : 5/6. What is the difference between the maximum share and the minimum share?

    a₹ 300

    b₹ 350

    c₹ 400

    d₹ 450
58. Question 58 · Basic Numeracy

    For what value of n, the sum of digits in the number (10^n + 1) is 2?

    aFor n = 0 only

    bFor any whole number n

    cFor any positive integer n only

    dFor any real number n
59. Question 59 · Basic Numeracy

    In a class, there are three groups A, B and C. If one student from group A and two students from group B are shifted to group C, then what happens to the average weight of the students of the class?

    aIt increases.

    bIt decreases.

    cIt remains the same.

    dNo conclusion can be drawn due to insufficient data.
60. Question 60 · Basic Numeracy

    How many different sums can be formed with the denominations ₹ 50, ₹ 100, ₹ 200, ₹ 500 and ₹ 2,000 taking at least three denominations at a time?

    a16

    b15

    c14

    d10
61. Question 61 · Reading Comprehension

    

    Which one of the following is the most logical and rational inference that can be made from the above passage?

    aIndian banking system is not able to help the country in its economic growth.

    bEconomic reforms that started in 1991 have not helped in improving the economy to expected levels.

    cIndia lacks the institutional mechanism to deal with the failure of banks.

    dEncouraging the foreign investments in our industrial sector is a good alternative to this sector's dependence on banks for credit.
62. Question 62 · Reading Comprehension

    

    Which one of the following is the most logical and rational inference that can be made from the above passage?

    aIndia's commitment to reduce emissions by 33% is unlikely to be achieved.

    bIndia should import gas rather than invest in renewable resources.

    cGetting renewable resources to market too soon may be costly.

    dIndia should put in more efforts in the exploration of natural gas.
63. Question 63 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Governments often provide inefficient and costly subsidies for technologies that may not be ready in the near future.
    2. 2.India's commitment of reducing emissions by 33% by 2030 shall be on the basis of gas-based economy.

    Which of the above assumptions is/are valid?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
64. Question 64 · Reading Comprehension

    

    With reference to the above passage, the following assumptions have been made :

    1. 1.Genome editing does not require the transfer of genes from one plant to another.
    2. 2.Through genome editing, the chosen genes can be altered precisely in a manner akin to the natural process that helps plants to adapt to the environmental factors.

    Which of the above assumptions is/are valid?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
65. Question 65 · Reading Comprehension

    

    In the context of India, which one of the following statements best reflects the critical message of the passage?

    aIn India, the drainage networks are not separate for sewerage and storm water.

    bUrban local bodies do not have enough resources and legislative authority to deal with the problems of waste management.

    cSolid waste management should be integrated with the maintenance of drainage and sewerage networks.

    dBad management of solid waste and sewerage systems by our municipalities is the reason for drinking water shortages in our cities.
66. Question 66 · Reading Comprehension

    

    What is the most logical inference from the above passage?

    aState shall not interfere with the religious affairs of the citizens.

    bReligious freedom under the Constitution is open to State intervention.

    cReligious freedom of the citizens is not covered under fundamental rights.

    dReligious practices of any community are immune to State laws.
67. Question 67 · Basic Numeracy

    How many different 5-letter words (with or without meaning) can be constructed using all the letters of the word ‘DELHI’ so that each word has to start with D and end with I?

    a24

    b18

    c12

    d6
68. Question 68 · Basic Numeracy

    A bottle contains 20 litres of liquid A. 4 litres of liquid A is taken out of it and replaced by same quantity of liquid B. Again 4 litres of the mixture is taken out and replaced by same quantity of liquid B. What is the ratio of quantity of liquid A to that of liquid B in the final mixture?

    a4 : 1

    b5 : 1

    c16 : 9

    d17 : 8
69. Question 69 · Basic Numeracy

    The average score of a batsman after his 50th innings was 46·4. After 60th innings, his average score increases by 2·6. What was his average score in the last ten innings?

    a122

    b91

    c62

    d49
70. Question 70 · Basic Numeracy

    As a result of 25% hike in the price of rice per kg, a person is able to purchase 6 kg less rice for ₹ 1,200. What was the original price of rice per kg?

    a₹ 30

    b₹ 40

    c₹ 50

    d₹ 60
71. Question 71 · Basic Numeracy

    A person X can complete 20% of work in 8 days and another person Y can complete 25% of the same work in 6 days. If they work together, in how many days will 40% of the work be completed?

    a6

    b8

    c10

    d12
72. Question 72 · Basic Numeracy

    A car travels from a place X to place Y at an average speed of v km/hr, from Y to X at an average speed of 2v km/hr, again from X to Y at an average speed of 3v km/hr and again from Y to X at an average speed of 4v km/hr. Then the average speed of the car for the entire journey

    ais less than v km/hr

    blies between v and 2v km/hr

    clies between 2v and 3v km/hr

    dlies between 3v and 4v km/hr
73. Question 73 · Basic Numeracy

    Consider the following statements :

    1. 1.The minimum number of points of intersection of a square and a circle is 2.
    2. 2.The maximum number of points of intersection of a square and a circle is 8.

    Which of the above statements is/are correct?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
74. Question 74 · Basic Numeracy

    A man takes half time in rowing a certain distance downstream than upstream. What is the ratio of the speed in still water to the speed of current?

    a1 : 2

    b2 : 1

    c1 : 3

    d3 : 1
75. Question 75 · Basic Numeracy

    How many pairs of natural numbers are there such that the difference of whose squares is 63?

    a3

    b4

    c5

    d2
76. Question 76 · Basic Numeracy

    Which one of the following will have minimum change in its value if 5 is added to both numerator and the denominator of the fractions 2/3, 3/4, 4/5 and 5/6?

    a2/3

    b3/4

    c4/5

    d5/6
77. Question 77 · Basic Numeracy

    A digit n > 3 is divisible by 3 but not divisible by 6. Which one of the following is divisible by 4?

    a2n

    b3n

    c2n + 4

    d3n + 1
78. Question 78 · Basic Numeracy

    If 1 litre of water weighs 1 kg, then how many cubic millimetres of water will weigh 0·1 gm?

    a1

    b10

    c100

    d1000
79. Question 79 · Basic Numeracy

    A vessel full of water weighs 40 kg. If it is one-third filled, its weight becomes 20 kg. What is the weight of the empty vessel?

    a10 kg

    b15 kg

    c20 kg

    d25 kg
80. Question 80 · Basic Numeracy

    A frog tries to come out of a dried well 4·5 m deep with slippery walls. Every time the frog jumps 30 cm, slides down 15 cm. What is the number of jumps required for the frog to come out of the well?

    a28

    b29

    c30

    d31

Source: UPSC, Civil Services (Preliminary) Examination 2020, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.