Rank and Ordering

UPSC CSAT Logical Reasoning

Introduction

Ranking and order is an important under logical reasoning section; it involves an arrangement of position or ranks of an object or a person either from left to right or top to bottom.

It involves the usage of a few tips and tricks learned in the seating arrangement.
Example:

Rank of E from left is 5, rank from right is 6. Sum of left and right rank is 11. Total number of students are 10.

We can write,

  • Left Rank + Right Rank = Total Number + 1

Practice Questions:

1. In a row of persons, the position of Rahul from the left side of the row is 28th and position of Rahul from the right side of the row is 35th. Find the total number of students in the row?
a. 61
b. 62
c. 63
d. 60

2. In a row of persons, the position of Anisha Nair from the left side of the row is 27th and there are 5 persons after her in the row. Find the total no. of persons in the row?

a. 31
b. 32
c. 33
d. 34

3. There are 64 history books arranged in a row at central library Bangalore. Ancient history is 25th from the left side of the row and Middivel history is 30th from the right side of the row. What is the total number of books between Ancient and Middivel history?
a. 6
b. 7
c. 8
d. 9

4. There is a pride of lions and its cubs in a row, the position of eldest lioness from the left side of the row is 9th & position of youngest lioness from the right side of the row is 8th. If the new-born cub is sitting just in the middle of eldest & youngest and position of cub from the left side of the row is 15th. Find the total number of lions the row?

a. 28
b. 26
c. 25
d. 29

5. In a row, A is in the 11th position from the left and B is in the 10th position from the right. If ‘A’ and ‘B’ interchange then A becomes 18th from the left. How many persons are there in the row other than A and B?
a. 27
b. 26
c. 25
d. 24

6. In a class of 60 students, where girls are twice that of boys. Kamal ranked seventeenth from the top, if there are 9 girls ahead of Kamal, how many boys are after him in rank?
a. 3
b. 7
c. 12
d. 23

7. 15 students failed in a class of 52. After removing the names of failed students, a merit order list has been prepared in which the position of Ramesh is 22nd from the top. What is his position from the bottom?
a. 18th
b. 17th
c. 16th
d. 15th

8. In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is his new rank from the end? (UPSC 2013)
a. 27th
b. 26th
c. 25th
d. 28th

9. In a row, A is in the 11th position from the left and B is in the 10th position from the right. If ‘A’ and ‘B’ interchange then A becomes 18th from the left. How many persons are there in the row other than A and B? (UPSC 2020)
a. 27
b. 26
c. 25
d. 24

10. In a class of 60 students, where girls are twice that of boys. Kamal ranked seventeenth from the top, If there are 9 girls ahead of Kamal, how many boys are after him in rank?
a. 13
b. 12
c. 7
d. 3

11. In a row of 21 girls, when Monika was shifted by four places towards the right, she became 12th from the left end. What was her earlier position from the right end of the row?
a. 9th
b. 10th
c. 11th
d. 14th

12. Sanjeev ranks seventh from the top and twenty eighth from the bottom in a class. How many students are there in the class?
a. 37
b. 36
c. 35
d. 34

13. Rahul ranked ninth from the top and thirty eighth from the bottom in a class. How many students are there in the class?
a. 45
b. 46
c. 47
d. 48

14. In a row of trees, one tree is fifth from either end of the row. How many trees are there in the row?
a. 8
b. 9
c. 10
d. 11

15. On sports day in a school, 8 students took part in a race. They were all made to stand in a straight line. Sumit was standing 5th from the right end, and 3 students are standing in between Sumit and Ritesh. Based on this arrangement, what is the position of Ritesh from the left end of the line?
a. 6th
b. 2nd
c. None of the above
d. Cannot be determined

16. Siva ranks 16th from the top and 49th from the bottom in a class. How many students are there in the class?
a. 60
b. 64
c. 66
d. 69

17. 15 students failed in a class of 52. After removing the names of failed students, a merit order list has been prepared in which the position of Ramesh is 22nd from the top. What is his position from the bottom? (UPSC 2017)
a. 18th
b. 16th
c. 17th
d. 15th

18. Three persons A, B and C are standing in a queue. There are five persons between A and B and eight persons between B and C. If there be three persons ahead of C and 21 persons behind A, what could be the minimum number of persons in the queue?
a. 41
b. 40
c. 28
d. 27

19. Manisha ranked sixteenth from the top and twenty ninth from the bottom among those who passed an examination. Six boys did not participate in the competition and five failed in it. How many boys were there in the class?
a. 40
b. 44
c. 50
d. 55

20. In a row of girls. Neha is eighth from the left and Heena is seventeenth from the right. If they interchange their positions. Neha becomes fourteenth from the left. How many girls are there in the row?
a. 25
b. 27
c. 29
d. None of these


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