Tips on solving Ranking and Order Questions

Ranking and Ordering questions are very important in any of the govt sector exams, banking exams, private sector placement exams, SSC or CAT. Here I am going to share the best tips and tricks to solve such questions.

In these types of questions, normally you’ll be given a set of items/persons in a sequence. There will be some data and conditions which would be provided in the question.

Do you already know this topic? Try test Ranking and Order Test.

Based on that info, you need to find out the answers to other questions, which can be directly inferred from the information and facts given in the question.

Type 1 – Find total persons in a queue

Let’s understand it with the help of an example.

Ques. Bhoomi is standing in a queue. She is standing in the 6th position from the front. She is at the 4th position from behind. What is the total number of people standing in the queue?

A. 8
B. 9
C. 10
D. 11

The position of Bhoomi is given from the front and back of the queue. So what we can do is imagine the queue as shown in the figure below.

Ordering and Ranking Example
Ordering and Ranking Example

Now count the total people in the figure.

Yes, they are 9. But is it a good technique to draw and count?

Certainly No. So let me give you a formula.

Formula

total number of people in queue = Rank of 1 person from the front + rank of the same person from the back – 1

Type 2 – Rank from Front or Back

Similarly, you might be given the total number of a person in the queue and Rank from front or back.

Take this question.

Question In a row of 27 students, the position of Rahul from the left side is 12th. Find the position of Rahul from the right side of the row of students.

A. 14
B. 15
C. 16
D. 17

Again you can apply the same formula as

total students = position from left + position from right -1

27 = 12 + x -1

27 = 11 + x

x = 27 – 11 = 16

So position of Rahul is 16 from the right.

Miscellaneous Order and Ranking problems

There might be questions in this category, where there are rankings of different persons in the same queue.

The ranking of 2 persons from the opposite end can be overlapping or non-overlapping.

Check the figure below.

Overlapping and Non overlapping rankings from opposite ends
Overlapping and Non-over-lapping rankings from opposite ends

Whenever ranks are given for 2 people from opposite ends, then we need to find whether it is an overlapping problem or a non-overlapping problem.

How to find it?

If the sum of the rank of A and B > total people in the row, then it’s an overlapping problem.

In this case,

Total People = (Rank of A from left side + Rank of B from the right side) – (total no. of people between A & B) – 2

If the sum of the rank of A and B is less than the total people in the row, then its a non-overlapping problem.

In this case,

Total People = (Rank of A from left side + Rank of B from the right side) + (total no. of people between A & B)

Let’s check an example.

Question In a row of 54 persons, Amit is 15th from the right side of the row, Vandana is 20th from the left side of the row. Find the number of persons sitting between Vandna and Amit.
A. 18
B. 19
C. 20
D. 21

Step 1: Find the sum of ranks from opposite sides

Sum of ranks = 15 + 20 = 35.

Step 2: Compare the sum with total persons

35 < total persons (54), so this is the case of non-overlapping ranks

Step 3: So the formula to be applied is,

Total People = (Rank of Vandana from left side + Rank of Amit from the right side) + (total no. of people between A & B)

Substitute the values,

54 = 35 + total number of people between Amit and Vandna

total number of people between Vandna and Amit = 54-35 = 19

So, B. 19 is the correct answer.

Let’s check another example,

Question In a row of 87 persons, Rajeev is 51st from the right side of the row, Varun is 62nd from the left side of the row. Find the number of persons sitting between Varun and Rajeev?

A. 23
B. 25
C. 24
D. 34

Step 1: Find the sum of ranks from opposite sides

Sum of rank from opposite sides = 51 + 62 = 113

Step 2: Compare the sum with total persons

113 > total persons in the row (87), so this is the case of overlapping ranks

Step 3: So the formula to be applied is,

Total People = (Sum of Ranks) – (total no. of people between A & B) – 2

Substitute the values in the formula,

87 = 113 – (total no. of people between Varun and Rajeev) – 2

total no. of people between Varun and Rajeev = 113 – 2 – 87 = 24

So clearly C. 24 is the correct answer.

Conclusion

In this category, speed is the key. All you need to do is to remember 4 formulae mentioned above and practice these types of questions as much as possible.

Practice Order and Ranking by this test.

Check our interesting article on How to solve Scheduling puzzles in a reasoning test?

For any suggestions, doubts or complaints, please comment below this post.

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