Element Series – Explained with Examples

Element Series Reasoning 

Hello Readers

Today’s topic is Element Series. Generally this topic comes in the competitive exams with the weightage of 5 marks.

Let’s start discussing the topic with meaning of Element Series.

Element Series is the series of different elements i.e. it can be letters, numbers or different symbols.

In the element series questions, we have to find the positions of the elements from the either ends of the series. Or in simple language, we have to count the position of the element based on the conditions given in the questions.

Before discussing the different type of questions asked from Element Series. I would like to discuss some common words used in the questions mentioning the positions of the elements.

Here is the example explaining the above mentioned words:

 

Example:

XYZ

As you can see there are three elements in the series. Now, let’s see how we can mention the position of the elements in different ways:

  • X precedes Y  →  X comes first   
  • Y precedes Z  →  Y comes before Z
  • Y follows X   →  Y comes after X
  • Z follows Y   →  Z comes after Y
  • Y is preceded by X
  • Z is preceded by Y
  • X is followed by Y
  • Y is followed by Z

So, Precedes  →  Before something; &

      Follows   →  After something

 

As mentioned above, we have to count the positions of the elements; it is advisable to count the elements in groups of 3-4 elements rather than counting each element to reduce the time of counting.

Now, let’s start discussing the topic with the help of example, containing different type of questions.

 

Example:

Study the following arrangement carefully and answer the questions given below:

 

M 3 # R A T 1 E J $ K @ F U 5 4 V I 6 © D 8 * H N 7 β 2 W1) 

 

1)Four of the following five are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to that group?

 

a) TER

b) U4@

c) 6DV

d) J1K

e) Nβ*

 

SOLUTION The correct answer is d) J1K

In these types of question, we have to check the positions of the elements of different options. Let’s check the positions from a) to e) from the given series and find the odd one.

Element Series Reasoning 1

So the pattern is +2 in the forward direction and -2 in the backward direction.

 

2) How many such numbers are there in the above arrangement each of which is immediately preceded by a letter but not immediately followed by a letter?

a) None

b) One

c) Two

d) Three

e) More than three

SOLUTION The correct answer is e) More than three

According to the above conditions, we have to find :

JHGJKH

Element Series Reasoning 2

 

3) What should come in the place of question mark (?) in the following series based on the above arrangement?

RT1          $@F          4I6          ?

a) 8*H

b) 8HN

c) 8H7

d) D*H

e) None of these

SOLUTION The correct answer is  b) 8HN

Element Series Reasoning 3

 

4) How many such symbols are there in the above arrangement, each of which is immediately preceded by a number and immediately followed by a letter?

  1. a) None
  2. b) One
  3. c) Two
  4. d) Three
  5. e) More than three

SOLUTIONThe correct answer is  d) Three

Element Series Reasoning 4

 

5) Which of the following is seventh to the left of the twentieth from the left end of the above arrangement?

a) V

b) @

c) β

d) ©

e) None of these

SOLUTION The correct answer is e) None of these

 

Element Series Reasoning 5

 

  • There is the trick to solve such type of questions. We don’t have to count each element to get the answer. Below is the table showing that how to add or deduct the numbers to get the asked position of the element.

 

Element Series Reasoning Table

  • Like poles repels each other (-)
  • Unlike poles attract each other (+)

 

Check these conditions by applying on the above example:

Condition Seventh to the left of the twentieth from the left end.

Left and Left = –

So, 20-7 = 13th element which is F

 

6) If the above given series is reversed, which element will be the 5th to the right of the 12th element from the left end?

a) V

b) F

c) U

d) @

e) None of these

SOLUTION – The correct answer is b) F

 

Element Series Reasoning 6

 

Condition – 5th to the right of the 12th element from the left end

Right and Left = +

So, 17th element from left. But as series is reversed, its answer will also be reversed.

17th element from right end = F

 

7) If all the numbers are dropped from the above series, which element will be the 6th from the left of 15th from the left end?

a) $

b) @

c) Cannot be determined

d) K

e) None of these

SOLUTION The correct answer is d) K

Element Series Reasoning 7

Condition – 6th from the left of 15th from the left end (dropping numbers)

Left and Left = –

So, 9th element from left end (dropping numbers) = K

 

8) In the above series, which element is 10th to the left of the 5th to the left of *?

a) #

b) R

c) A

d) 3

e) None of these

 

SOLUTION The correct answer is a) #

 

Element Series Reasoning 8

 

With this, we will finish this topic here.

 

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