UPSC Insta–DART (Daily Aptitude and Reasoning Test) 15 Jan 2026

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 One evening after sunset, a man Ravi was standing facing some direction. If his shadow was exactly to his left side, which direction was he facing? (a) North (b) South (c) East (d) West Correct Answer : (b) Explanation: In the evening, the sun is in the west and so the shadows fall towards the east. So, Ravi’s shadow fell towards the east. Given that Ravi’s shadow is on his left side, it means his left is east. If left is east, he must be facing south (because when you face south, your left is east and your right is west). Therefore, Ravi was facing south. Hence, option (b) South is correct. Incorrect Answer : (b) Explanation: In the evening, the sun is in the west and so the shadows fall towards the east. So, Ravi’s shadow fell towards the east. Given that Ravi’s shadow is on his left side, it means his left is east. If left is east, he must be facing south (because when you face south, your left is east and your right is west). Therefore, Ravi was facing south. Hence, option (b) South is correct.

#### 1. Question

One evening after sunset, a man Ravi was standing facing some direction. If his shadow was exactly to his left side, which direction was he facing?

Answer : (b)

Explanation: In the evening, the sun is in the west and so the shadows fall towards the east. So, Ravi’s shadow fell towards the east.

Given that Ravi’s shadow is on his left side, it means his left is east. If left is east, he must be facing south (because when you face south, your left is east and your right is west).

Therefore, Ravi was facing south.

Hence, option (b) South is correct.

Answer : (b)

Explanation: In the evening, the sun is in the west and so the shadows fall towards the east. So, Ravi’s shadow fell towards the east.

Therefore, Ravi was facing south.

Hence, option (b) South is correct.

• Question 2 of 5 2. Question The sum of the age of a father and the age of a son is 60 years. If the product of their ages before 4 years was 480, then what is the present age of the father? (a) 60 years (b) 52 years (c) 50 years (d) 44 years Correct Incorrect

#### 2. Question

The sum of the age of a father and the age of a son is 60 years. If the product of their ages before 4 years was 480, then what is the present age of the father?

• (a) 60 years

• (b) 52 years

• (c) 50 years

• (d) 44 years

• Question 3 of 5 3. Question Out of three numbers, the first is three times the second and is half of the third. If the average of the three numbers is 50, what will be the difference between the highest no. and the lowest one? (a) 60 (b) 70 (c) 75 (d) 80 Correct Answer : C Explanation: Let second no. = x First no. = 3x Third no. = 6x ∴ x + 3x + 6x = 50 × 3 10x = 150 x = 15 Lowest no. = x = 15 Highest no. = 6x = 90 Difference = 90 − 15 = 75 Incorrect Answer : C Explanation: Let second no. = x First no. = 3x Third no. = 6x ∴ x + 3x + 6x = 50 × 3 10x = 150 x = 15 Lowest no. = x = 15 Highest no. = 6x = 90 Difference = 90 − 15 = 75

#### 3. Question

Out of three numbers, the first is three times the second and is half of the third. If the average of the three numbers is 50, what will be the difference between the highest no. and the lowest one?

Answer : C

Explanation: Let second no. = x First no. = 3x Third no. = 6x

∴ x + 3x + 6x = 50 × 3 10x = 150 x = 15

Lowest no. = x = 15 Highest no. = 6x = 90

Difference = 90 − 15 = 75

Answer : C

Explanation: Let second no. = x First no. = 3x Third no. = 6x

∴ x + 3x + 6x = 50 × 3 10x = 150 x = 15

Lowest no. = x = 15 Highest no. = 6x = 90

Difference = 90 − 15 = 75

• Question 4 of 5 4. Question The average price of 12 notebooks is Rs. 15 while the average price of 9 of these notebooks is Rs. 14. Of the remaining three notebooks, if the price of one notebook is 50% more than each of the other two (which have equal price), what are the prices of these three notebooks? (a) Rs 12, Rs 12, Rs 18 (b) Rs 10, Rs 10, Rs 15 (c) Rs 14, Rs 14, Rs 21 (d) Rs 16, Rs 16, Rs 24 Correct Incorrect

#### 4. Question

The average price of 12 notebooks is Rs. 15 while the average price of 9 of these notebooks is Rs. 14. Of the remaining three notebooks, if the price of one notebook is 50% more than each of the other two (which have equal price), what are the prices of these three notebooks?

• (a) Rs 12, Rs 12, Rs 18

• (b) Rs 10, Rs 10, Rs 15

• (c) Rs 14, Rs 14, Rs 21

• (d) Rs 16, Rs 16, Rs 24

• Question 5 of 5 5. Question In a college fest, students participated in a coding competition. Question: How many students participated in total? Statement I: 30% of the participants were girls. Statement II: The number of boys was 140. (a) Statement I alone is sufficient. (b) Statement II alone is sufficient. (c) Both Statement I and Statement II together are sufficient. (d) Statement I and Statement II together are insufficient. Correct Answer: (c) Solution: Statement I: 30% are girls → 70% are boys. But actual numbers are missing. ⇒ Not sufficient alone. Statement II: Boys = 140 But without knowing percentage breakdown, we cannot find total. ⇒ Not sufficient alone. Combining both: 70% of total participants = 140 Total participants = 140 / 0.70 = 200 Hence, both statements together are sufficient. Incorrect Answer: (c) Solution: Statement I: 30% are girls → 70% are boys. But actual numbers are missing. ⇒ Not sufficient alone. Statement II: Boys = 140 But without knowing percentage breakdown, we cannot find total. ⇒ Not sufficient alone. Combining both: 70% of total participants = 140 Total participants = 140 / 0.70 = 200 Hence, both statements together are sufficient.

#### 5. Question

In a college fest, students participated in a coding competition. Question: How many students participated in total?

Statement I: 30% of the participants were girls. Statement II: The number of boys was 140.

• (a) Statement I alone is sufficient.

• (b) Statement II alone is sufficient.

• (c) Both Statement I and Statement II together are sufficient.

• (d) Statement I and Statement II together are insufficient.

Answer: (c)

Solution:

Statement I: 30% are girls → 70% are boys. But actual numbers are missing. ⇒ Not sufficient alone.

Statement II: Boys = 140 But without knowing percentage breakdown, we cannot find total. ⇒ Not sufficient alone.

Combining both: 70% of total participants = 140

Total participants = 140 / 0.70 = 200

Hence, both statements together are sufficient.