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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).
Wish you all the best ! 🙂
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Question 1 of 5
1. Question
In an examination , full mark is 500, A gets 25% more than B, B gets 50% more than C and C gets 60% more than D. If A got 320, what percentage of full marks did D got (approx)?
Correct
Answer : C
Explanation: A = 125/100 of B => B =(4/5) A B = 150/100 of C => C = (2/3) B C = 160/100 0f D => D = (5/8) C B = (4/5 ) × 320 = 256 C = (2/3 ) × 256 = 170 D = (5/8 ) × 183 = 114 D percentage = (114/500 ) × 100 = 23%
Incorrect
Answer : C
Explanation: A = 125/100 of B => B =(4/5) A B = 150/100 of C => C = (2/3) B C = 160/100 0f D => D = (5/8) C B = (4/5 ) × 320 = 256 C = (2/3 ) × 256 = 170 D = (5/8 ) × 183 = 114 D percentage = (114/500 ) × 100 = 23%
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Question 2 of 5
2. Question
How many degrees does an hour-hand move in 15 minutes?
Correct
Answer : B
Explanation: In 12 hours the hour-hand moves 360°. Hence, in 15 minutes it moves (360/12)∗(15/60)° = 7.5°
Incorrect
Answer : B
Explanation: In 12 hours the hour-hand moves 360°. Hence, in 15 minutes it moves (360/12)∗(15/60)° = 7.5°
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Question 3 of 5
3. Question
Two buses start at the same time from Bangalore and Chennai, which are 300 km. apart, towards each other. After what time will they cross each other if their speeds are 38 km per hour and 37 km per hour?
Correct
Answer : A
Explanation: Distance between Chennai and Bangalore = 300 km Relative speed = 38 + 37 = 75 km/hr Time taken to cross each other = Distance/Speed = 300/75= 4 hours.
Incorrect
Answer : A
Explanation: Distance between Chennai and Bangalore = 300 km Relative speed = 38 + 37 = 75 km/hr Time taken to cross each other = Distance/Speed = 300/75= 4 hours.
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Question 4 of 5
4. Question
Five light buttons blink at the interval of 6 s, 7 s, 8 s, 2 s, 3 s respectively. If they start blinking together, then how many times would they have blinked together in an hour?
Correct
Answer : C
Explanation: The time required for the lights to blink together will be equal to LCM of the interval of blink time of these. Calculation: LCM of 6, 7, 8, 2 and 3 = 168 Lights will blink together once in 168 seconds. Number of blinks in 1 hour = 3600/168 ⇒ Number of blinks in 1 hour = 21.42 ⇒ Number of blinks in 1 hour = 21 ∴ The number of blinks is 21.
Incorrect
Answer : C
Explanation: The time required for the lights to blink together will be equal to LCM of the interval of blink time of these. Calculation: LCM of 6, 7, 8, 2 and 3 = 168 Lights will blink together once in 168 seconds. Number of blinks in 1 hour = 3600/168 ⇒ Number of blinks in 1 hour = 21.42 ⇒ Number of blinks in 1 hour = 21 ∴ The number of blinks is 21.
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Question 5 of 5
5. Question
A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 110 runs, there by increasing his average by 6 runs. His new average is:
Correct
Answer : A
Explanation: Let average for 10 innings be x. Then, (10x+110)/11 = x + 6 = 11x + 66 = 10x + 110 = x = 44. New average = (x + 6) = 50 runs
Incorrect
Answer : A
Explanation: Let average for 10 innings be x. Then, (10x+110)/11 = x + 6 = 11x + 66 = 10x + 110 = x = 44. New average = (x + 6) = 50 runs
