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
What is the birth date of Sonali’s mother?
I. Sonali’s father remembers that his wife’s birthday is after 20th and before 23rd February.
II. Sonali’s brother remembers that their mother’s birthday was after 21st but before 25th February.
Correct
Answer: A
Explanation
From I, we find that the birthday of Sonali’s mother falls on 21st or 22nd February.
From II, we find that the birthday of Sonali’s mother falls on 22nd, 23rd or 24th February.
From together I and II, The day common to the above two groups is 22nd February. So, the birthday falls on 22nd February.
Incorrect
Answer: A
Explanation
From I, we find that the birthday of Sonali’s mother falls on 21st or 22nd February.
From II, we find that the birthday of Sonali’s mother falls on 22nd, 23rd or 24th February.
From together I and II, The day common to the above two groups is 22nd February. So, the birthday falls on 22nd February.
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Question 2 of 5
2. Question
The Chairman of a big company visits one department on Monday of every week except for the Monday of third week of every month. When did he visit the Purchase department?
I. He visited Accounts department in the second week of September after having visited Purchase department on the earlier occasion.
II. He had visited Purchase department immediately after visiting Stores department but before visiting Accounts department.
Correct
Answer: A
Explanation
From statement I, we can conclude that the Chairman visited Purchase department on Monday of the first week of September. So, I alone is sufficient.
The time of visit of no department is mentioned in II, which is, therefore, insufficient.
Incorrect
Answer: A
Explanation
From statement I, we can conclude that the Chairman visited Purchase department on Monday of the first week of September. So, I alone is sufficient.
The time of visit of no department is mentioned in II, which is, therefore, insufficient.
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Question 3 of 5
3. Question
In a certain code ’13’ means ‘stop smoking’ and ’59’ means ‘injurious habit’.
What is the meaning of ‘9’ and ‘5’ respectively in that code?
I. ‘157’ means ‘stop bad habit’.
II. ‘839’ means ‘Smoking is injurious’.
Correct
Answer: B
Explanation
’59’ means ‘injurious habit’ and ‘157’ means ‘stop bad habit’ (from I).
From statement I:
Thus, the common code number ‘5’ stands for common word ‘habit’. So, ‘9’ represents ‘injurious’. Hence, I is sufficient.
From statement II:
Also, ’59’ means ‘injurious habit’ and ‘839’ means ‘smoking is injurious’. Thus, the common code number ‘9’ stands for common word ‘injurious’. So, ‘5’ represents ‘habit’. Thus, II is also sufficient.
Incorrect
Answer: B
Explanation
’59’ means ‘injurious habit’ and ‘157’ means ‘stop bad habit’ (from I).
From statement I:
Thus, the common code number ‘5’ stands for common word ‘habit’. So, ‘9’ represents ‘injurious’. Hence, I is sufficient.
From statement II:
Also, ’59’ means ‘injurious habit’ and ‘839’ means ‘smoking is injurious’. Thus, the common code number ‘9’ stands for common word ‘injurious’. So, ‘5’ represents ‘habit’. Thus, II is also sufficient.
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Question 4 of 5
4. Question
(Qno 4-5): Each of the questions below consists of question and three statements numbered I, II, III given below it. You have to decide whether the data provided in the statements are sufficient to answer the question.
A, B, P, Q, S and T has the seminars on 18th and 25th in the month of April, May and June. Who among them has the seminar on May 18th?
I. B has the seminar on 18th in the month, which has 30 days. Only two persons have seminar between B and Q.
II. P and Q have the seminar on same month. No person has the seminar before P.
III. B and S have seminar on same month. A and S have not in same date.
Correct
Answer: D
Explanation
From I, II, III
Month/date 18th 25th
April P Q
May A T
June B S Hence, All I, II, III together are sufficient to answer.
Incorrect
Answer: D
Explanation
From I, II, III
Month/date 18th 25th
April P Q
May A T
June B S Hence, All I, II, III together are sufficient to answer.
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Question 5 of 5
5. Question
How many students are there in a row? All students are facing north.
I. Om is twelfth from the left end.
II. Piyush is eighth to the left of Rakesh, who is thirteenth from the right end and eighteenth from the left end.
III. Ritika is eleventh from the left end and is ninth to the left of Sanjay, who is fourteenth from the right end.
Correct
Answer: D
Explanation
From I.
Om is twelfth from the left end.
From II.
Total number of students in row = 18 + 13 – 1 = 30
From III.
Total number of students in row = 11 + 9 + 14 – 1 = 33
Thus either II or III is sufficient to answer the question.
Incorrect
Answer: D
Explanation
From I.
Om is twelfth from the left end.
From II.
Total number of students in row = 18 + 13 – 1 = 30
From III.
Total number of students in row = 11 + 9 + 14 – 1 = 33
Thus either II or III is sufficient to answer the question.
