What will you learn from this article?
  • Concept of order
  • Different Formulas and tricks for solving questions
  • Types of questions seen in the examinations
Exam Connect

Order as a topic is very straightforward and scoring. It is one of those topics which is seen across all of the competitive examinations. It is a short topic but with significant mark weightage.

Order

This chapter is all about numbers and letter sequences in a particular pattern. In these questions, you are required to find out how many times a letter or number satisfying the conditions specified in the questions occurs. There are two subcategories of questions which are seen under this topic:

  1. Order in numbers
  2. Order in alphabets

Order in Numbers

In this type of question, a series of numbers is given and, the candidate has to find out the numbers which follow the given condition.

Common Mistake: While solving question these types of questions, students often check and evaluate one number/alphabet at a time, which is very cumbersome and time-consuming. 

EazyTip: To simplify these types of questions, we will first convert the instructions given into a numeric or alphabetical key. Like in a question if you are asked how many ‘7’ are preceded by a ‘9’ and followed by a ‘1’, then the numeric Key for the question would be 971, Therefore, while scanning through the given series, we will be looking out for a 971.

 Example Question: How many 3s are there in the following number sequence, which is immediately proceeded by a ‘5’ and immediately followed by an ‘8’?

 5 8 1 4 9 2 1 3 5 3 8 4 8 3 5 4 7

Solution: Like in this question we are asked to find the number ‘3s’ which are preceded by a ‘5’ and followed by an ‘8’,

So the numeric key for this question would be 5 3 8,

Therefore, while scanning through the given series, we will be looking out for a 5 3 8.

5 8 1 4 9 2 1 3 5 3 8 4 8 3 5 4 7

So there is only one sequence of 5 3 8 present in the given series. Hence the answer is 1.

Example Question: Which of the following will be the last digit of the second-highest number after the position of the digits in each of the numbers given below is reversed?

459  824  912  567  369  512  114

Solution: Firstly, we will reverse the given number and arrange them in the ascending order.

215  219  411  428  765  954  963

Therefore, the last digit of the second-highest number is 4.

Order in Alphabets

In this type of question, a series of English alphabets are given and, the candidate has to find out the alphabets which follow the given condition.

Example Question: In the following series, how many W’s are between a Q and an E?

Q W E W Q W E Q E E E W Q Q E W Q W Q

Solution: Since the order of Q and E is not mentioned, we will consider both Q W E and E W Q.

 Q W E W Q W E Q E E E W Q Q E W Q W Q

 As we can see, there are four such pairs which follow the conditions.

Continue with Order and Ranking topic with the next article on Ranking: Concept and Types of Questions.