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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 a row of boys, A is thirteenth from the left and D is seventeenth from the right. If in this row A is eleventh from the right then what is the position of D from the left?
Correct
Ans: b
Clearly, A is 13th from the left and 11th from the right end of the row.
So, number of boys in the row = (12 + 1+10) = 23.
Now, D is 17th from the right.
Number of boys to the left of D = (23 -17) =6.
Hence, D is 7th from the left end of the row.
Incorrect
Ans: b
Clearly, A is 13th from the left and 11th from the right end of the row.
So, number of boys in the row = (12 + 1+10) = 23.
Now, D is 17th from the right.
Number of boys to the left of D = (23 -17) =6.
Hence, D is 7th from the left end of the row.
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Question 2 of 5
2. Question
Rajan is sixth from the left end and Vinay is tenth from the right end in a row of boys. If there are eight boys between Rajan and Vinay, how many boys are there in the row?
Correct
Ans: b
Clearly, number of boys in the row
= (6+ 10 + 8)= 24.
Incorrect
Ans: b
Clearly, number of boys in the row
= (6+ 10 + 8)= 24.
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Question 3 of 5
3. Question
In a row of boys, A is fifteenth from the left and B is fourth from the right. There are three boys between A and B. Cis just left of A. What is C’s position from the right?
Correct
Ans: a
Number of boys in the row = (15 + 4+ 3) =22.
Cis just left of A. So, C is 14th from the left end.
Number of boys to the right of C = (22- 14) = 8.
So, C is 9th from the right end of the row.
Incorrect
Ans: a
Number of boys in the row = (15 + 4+ 3) =22.
Cis just left of A. So, C is 14th from the left end.
Number of boys to the right of C = (22- 14) = 8.
So, C is 9th from the right end of the row.
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Question 4 of 5
4. Question
Rohit is seventeenth from the left end of a row of 29 boys and Karan is seventeenth from the right end in the same row. How many boys are there between them in the row?
Correct
Ans: a
Karan is 17th from the right end.
Number of boys to the left of Karan
= (29 – 17) =12.
So, Karan is 13th from the left end. Also, Rohit is 17th from the left end.
Clearly, there are 3 boys between Rohit and Karan.
Incorrect
Ans: a
Karan is 17th from the right end.
Number of boys to the left of Karan
= (29 – 17) =12.
So, Karan is 13th from the left end. Also, Rohit is 17th from the left end.
Clearly, there are 3 boys between Rohit and Karan.
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Question 5 of 5
5. Question
In a row of forty children, P is thirteenth from the left end and Q is ninth from the right end. How many children are there between P and R if R is fourth to the left of Q?
Correct
Ans: c
Q is 9th from the right end and R is fourth to the left of Q. So, R is 13th from the right end.
Number of children to the left of R = (40 -13) = 27.
Thus, R is 28th from the left end. Also, P is 13th from the left end.
Clearly, there are 14 persons between P and R.
Incorrect
Ans: c
Q is 9th from the right end and R is fourth to the left of Q. So, R is 13th from the right end.
Number of children to the left of R = (40 -13) = 27.
Thus, R is 28th from the left end. Also, P is 13th from the left end.
Clearly, there are 14 persons between P and R.
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