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
Find the wrong number in the following series.
2442 , 1222 , 614 , 312 ,163 , 90 , 55.75
Correct
Answer: C
Explanation
2442/2 + 1 = 1222
1222/2 + 3= 614
614/2 + 5 = 312
312/2 + 7 =163
163/2 + 9 = 89.5
89.5/2 + 11 = 55.75
Incorrect
Answer: C
Explanation
2442/2 + 1 = 1222
1222/2 + 3= 614
614/2 + 5 = 312
312/2 + 7 =163
163/2 + 9 = 89.5
89.5/2 + 11 = 55.75
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Question 2 of 5
2. Question
Find the wrong number in the following series.
191 341 221 331 251 281
Correct
Answer: B
Explanation
191 + (15 × 10) = 341
341 – (15 × 8) = 221
221 + (15 × 6) = 311
311 – (15 × 4) = 251
251 + (15 × 2) = 281
Incorrect
Answer: B
Explanation
191 + (15 × 10) = 341
341 – (15 × 8) = 221
221 + (15 × 6) = 311
311 – (15 × 4) = 251
251 + (15 × 2) = 281
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Question 3 of 5
3. Question
Direction (3-4) Find the missing number in the given series.
1953.125 781.25 312.5 ? 20
Correct
Answer: C
Explanation
1953.125/2.5=781.25
781.25/2.5=312.5
312.5/2.5=125
125/2.5=50
50/2.5=20
Incorrect
Answer: C
Explanation
1953.125/2.5=781.25
781.25/2.5=312.5
312.5/2.5=125
125/2.5=50
50/2.5=20
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Question 4 of 5
4. Question
1, 2, 3, 2, 4, 5, 4, 5, ?
Correct
Answer: A
Explanation
In this series three numbers from a set. The first two numbers of each set are in natural order and the third number is the sum of first and second numbers. The first number of the next set begins with double the first number of the previous set.
Incorrect
Answer: A
Explanation
In this series three numbers from a set. The first two numbers of each set are in natural order and the third number is the sum of first and second numbers. The first number of the next set begins with double the first number of the previous set.
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Question 5 of 5
5. Question
In the following number series, only one number is wrong. Find out the wrong number.
100, 101, 126, 207, 376, 660, 1106
Correct
Answer: A
Explanation
The pattern of the series is:
100 + 12 = 101
101 + 52 = 126
126 + 92 = 207
207 + 132 = 376
376 + 172 = 665
665 + 212 = 1106
Incorrect
Answer: A
Explanation
The pattern of the series is:
100 + 12 = 101
101 + 52 = 126
126 + 92 = 207
207 + 132 = 376
376 + 172 = 665
665 + 212 = 1106
