Considering the alarming importance of CSAT in UPSC CSE Prelims exam and with enormous requests we received recently, InsightsIAS has started Daily CSAT Test to ensure students practice CSAT Questions on a daily basis. Regular Practice would help one overcome the fear of CSAT too.We are naming this initiative as Insta– DART – Daily Aptitude and Reasoning Test. We hope you will be able to use DART to hit bull’s eye in CSAT paper and comfortably score 100+ even in the most difficult question paper that UPSC can give you in CSP-2021. Your peace of mind after every step of this exam is very important for us.
Looking forward to your enthusiastic participation (both in sending us questions and solving them on daily basis on this portal).
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Question 1 of 5
1. Question
When a daughter was born, the ratio of father’s age to mother’s age was 9 : 8. After 7 years, the ratio became 10 : 9. After how many more years will the ratio of mother’s age to daughter’s age become 5 : 1?
Correct
Incorrect
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Question 2 of 5
2. Question
A is 20% less efficient than B. A alone can finish a work in 20 days. A works alone for n days. Then B joins and they finish the work in exactly 10 days from the start. Find n.
Correct
Answer: (a)
Explanation:
If A is 20% less efficient than B, thenA : B = 4 : 5
A alone finishes the work in 20 days, so A’s 1-day work = 1/20.
Hence, B’s 1-day work = 5/4 × 1/20 = 1/16.
So, together their 1-day work = 1/20 + 1/16 = 9/80.
Now A works alone for n days, and both work together for (10 − n) days.
So,
n/20 + (10 − n) × 9/80 = 1
Multiplying by 80,
4n + 9(10 − n) = 80
4n + 90 − 9n = 80
−5n = −10
n = 2Hence, the correct answer is (a).
Incorrect
Answer: (a)
Explanation:
If A is 20% less efficient than B, thenA : B = 4 : 5
A alone finishes the work in 20 days, so A’s 1-day work = 1/20.
Hence, B’s 1-day work = 5/4 × 1/20 = 1/16.
So, together their 1-day work = 1/20 + 1/16 = 9/80.
Now A works alone for n days, and both work together for (10 − n) days.
So,
n/20 + (10 − n) × 9/80 = 1
Multiplying by 80,
4n + 9(10 − n) = 80
4n + 90 − 9n = 80
−5n = −10
n = 2Hence, the correct answer is (a).
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Question 3 of 5
3. Question
A booklet has 75 pages numbered from 1 to 75. A printer counts the number of digits typed. Consider:
Statement I: Pages 1 to 9 require 9 keystrokes
Statement II: Pages 10 to 75 require 132 keystrokes
Statement III: Total digits typed = 141
Statement IV: Pages 50 to 75 require 52 keystrokesWhich one of the following is correct?
Correct
Incorrect
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Question 4 of 5
4. Question
By late afternoon, the old town library had begun to fill in its quiet way. A college student was copying notes near the window, a rickshaw-puller rested on the back bench after lunch, and two schoolgirls stood before the noticeboard sounding out the titles of books they could not yet borrow. The municipal committee had recently suggested leasing the front verandah to a chain pharmacy, arguing that the room was underused and the rent could help repair the roof. But the librarian, Mrs. Farida, opposed the plan. She said that a library was not only a place where books were stored and issued; it was one of the few rooms in the town where a person could remain without having to buy, explain, or hurry. Another official might have called the proposal sensible administration. Farida felt that some institutions begin to diminish precisely when every unused corner is made to pay for itself.
Which of the following conclusions is/are correct?
- The library served functions that extended beyond lending books.
- Any public official who supports leasing public space is necessarily indifferent to community life.
- Mrs. Farida believed that the value of some public institutions cannot be measured only through revenue.
- The verandah had never been used for any meaningful purpose before the committee’s proposal.
Select the answer using the code given below.
Correct
Answer: (a)
Explanation
Statement 1 is correct:
The passage clearly shows that the library was being used for more than book storage or issue. A student was studying there, a worker was resting, and schoolgirls were engaging with books and notices. This supports the conclusion that the library served wider social purposes.Statement 2 is incorrect:
The passage does not say that every official who supports leasing public space is indifferent to community life. It only contrasts Mrs. Farida’s view with that of another official who might have considered the proposal sensible. The statement generalizes beyond the passage.Statement 3 is correct:
This follows directly from the passage. Mrs. Farida resists the leasing proposal because she believes the library offers a kind of presence and dignity that cannot be reduced to rent or utility. This clearly shows that she does not value the institution only in monetary terms.Statement 4 is incorrect:
The passage says the committee argued that the verandah was underused, but it does not establish that it had no meaningful use at all. Nor does the rest of the passage support such a conclusion. Hence, this statement is not valid.Therefore, option (a) is the correct answer.
Incorrect
Answer: (a)
Explanation
Statement 1 is correct:
The passage clearly shows that the library was being used for more than book storage or issue. A student was studying there, a worker was resting, and schoolgirls were engaging with books and notices. This supports the conclusion that the library served wider social purposes.Statement 2 is incorrect:
The passage does not say that every official who supports leasing public space is indifferent to community life. It only contrasts Mrs. Farida’s view with that of another official who might have considered the proposal sensible. The statement generalizes beyond the passage.Statement 3 is correct:
This follows directly from the passage. Mrs. Farida resists the leasing proposal because she believes the library offers a kind of presence and dignity that cannot be reduced to rent or utility. This clearly shows that she does not value the institution only in monetary terms.Statement 4 is incorrect:
The passage says the committee argued that the verandah was underused, but it does not establish that it had no meaningful use at all. Nor does the rest of the passage support such a conclusion. Hence, this statement is not valid.Therefore, option (a) is the correct answer.
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Question 5 of 5
5. Question
Which of the following statements are not correct?
- Mrs. Farida viewed the library as having a civic function beyond the circulation of books.
- The passage suggests that renting the verandah would necessarily enhance the social worth of the library.
- It may be inferred that some administrators would regard financial return as a practical criterion in managing public institutions.
- The library is presented as a space where one’s presence depends mainly on one’s purchasing power.
Select the answer using the code given below.
Correct
Answer: (b)
Explanation
Statement 1 is correct:
The passage explicitly supports this. Mrs. Farida says that the library is not merely a place where books are stored and issued, but one of the few rooms where a person may remain without having to buy, explain, or hurry. This gives it a broader civic role.Statement 2 is not correct:
The passage suggests the opposite. Mrs. Farida believes that some institutions begin to diminish when every corner is made to pay for itself. So the idea that renting the verandah would necessarily improve the library’s social value is not supported.Statement 3 is correct:
The passage says that another official might have called the leasing proposal sensible administration. This implies that some administrators may indeed prioritize financial return as a practical consideration in managing institutions.Statement 4 is not correct:
The passage again suggests the opposite. The library is described as a place where a person can remain without having to buy anything. So purchasing power is not presented as the basis of presence or belonging.Therefore, option (b) is the correct answer.
Incorrect
Answer: (b)
Explanation
Statement 1 is correct:
The passage explicitly supports this. Mrs. Farida says that the library is not merely a place where books are stored and issued, but one of the few rooms where a person may remain without having to buy, explain, or hurry. This gives it a broader civic role.Statement 2 is not correct:
The passage suggests the opposite. Mrs. Farida believes that some institutions begin to diminish when every corner is made to pay for itself. So the idea that renting the verandah would necessarily improve the library’s social value is not supported.Statement 3 is correct:
The passage says that another official might have called the leasing proposal sensible administration. This implies that some administrators may indeed prioritize financial return as a practical consideration in managing institutions.Statement 4 is not correct:
The passage again suggests the opposite. The library is described as a place where a person can remain without having to buy anything. So purchasing power is not presented as the basis of presence or belonging.Therefore, option (b) is the correct answer.
