Introduction to Letter Series

# Introduction to Letter Series | CSAT Preparation - UPSC PDF Download

## Letter Series

The concept of letter series is related to 26 letters of the alphabet series.

The questions asked would vary based on the position of an English letter to the left or right of another English letter in the alphabetical order. Sometimes the questions are asked on finding the number of English letter(s) between two different English letters, and sometimes on the arrangement of alphabetical order. It can be forward, first half forward, second half forward, backward, first half backward, second half backward, multiple letter segments in changed order, word formation, and letter position in word or series etc.

## Important points to keep in mind always while solving letter series questions

(i) Position number of letters in English

(ii) Position number of letters in English alphabets in reverse
(iii) A, E , I, O and U are Vowels of English Alphabets and the remaining letters are Consonants of English Alphabets.
(iv) A → M (A to M) letters are called first half of English Alphabets.
(v) N → Z (N to Z) letters are called second half of English Alphabets.
(vi) From A → Z (A to Z) letters are called 'left to right' or 'to right' in English Alphabets.
(vii) From Z → A (Z to A) letters are called 'right to left' or 'to right' in English Alphabets.
It is important to note that while solving the questions of letter series, if you keep in mind the forward and backward position of all the alphabets along with its number, you can save a lot of time.

## The following two concepts in order to recall the position of alphabets easily.

### 1. Concept of EJOTY

Concept of EJOTY represents the position of the alphabets counting from the left at an interval of 5 letters:

Each letter in the term EJOTY represents the position which is multiple of 5.

### 2. Concept of VQLGB

Just like the concept EJOTY, the concept of VQLGB represents the position of the alphabets counting from the right at an interval of 5 letters:

In the next tutorials, we will talk about the different categories of questions that can be asked on letter series.

### Practice Questions

Q.1. Find the letter on following positions:
(a) 17
(b) 23
(c) 7
(d) 12

Ans.
(a) 17 = 15(O) + 2 = O + 2 = Q
(b) 23 = 20(T) + 3 = T + 3 =W
(c) 7   = 5(E) + 2 = E + 2 = G
(d) 12 = 10(J) + 2 = J + 2 = L

The above all positions of the letters are from left hand side of the series. One must also know the positions of letters from the right hand side of the series also. Let us check how we will do this:

For example:
We know that Letter “A” is on 1st position from left side and “26” form the right hand side. Therefore, the sum of the positions of any letter from both sides will always be 27.
Therefore, to check any position from right hand side, we will first convert that position to left hand side by deducting it from 27.

Q.2. Find the letters on the following positions from right hand side of   the alphabet series:
(a) 17
(b) 23
(c) 7
(d) 12

To find out these positions we will first convert all the positions from the left hand side of the series:
Ans.
(a) 17th from the right means (27-17) = 10th from left = J
(b) 23rd from the right means (27-23) = 4th from left = D
(c) 7th from the right means (27-7) = 20th from left = T
(d) 12th from the right means (27-12) = 15th from left = O

The document Introduction to Letter Series | CSAT Preparation - UPSC is a part of the UPSC Course CSAT Preparation.
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## FAQs on Introduction to Letter Series - CSAT Preparation - UPSC

 1. What are the important points to keep in mind while solving letter series questions?
Ans. The important points to keep in mind while solving letter series questions are: - Understand the pattern: Analyze the given letters carefully and try to identify the pattern or rule followed in the series. - Position of alphabets: Memorize the position of alphabets in the English alphabet series to easily recall their positions while solving the questions. - Observe the sequence: Look for any specific sequence or arrangement of letters in the given series. - Identify the missing letter: If there is a missing letter in the series, try to determine its position based on the pattern followed. - Practice and familiarity: Solve various letter series questions to improve your skills and become more familiar with different patterns.
 2. How can I introduce myself to the concept of the letter series?
Ans. To introduce yourself to the concept of the letter series, you can start by understanding the basics of alphabetical order and the position of each alphabet in the English alphabet series. Once you are familiar with the positions, you can begin analyzing different letter series patterns. Practice solving various letter series questions and try to identify the rules or patterns followed in each series. With regular practice and exposure to different patterns, you will gain a better understanding of the concept.
 3. What are some frequently asked questions (FAQs) about letter series in exams?
Ans. Some frequently asked questions about letter series in exams are: 1. What is the next letter in the series: A, C, E, G, ___? 2. Find the missing letter in the series: B, D, F, ___, J. 3. Identify the pattern in the series: A, B, D, G, K, ___. 4. Which of the following series follows the same pattern as the given series: ABC, DEF, GHI, ___? 5. Rearrange the letters in the series to form a meaningful word: R, U, T, A, ___.
 4. How can I improve my performance in solving letter series questions?
Ans. To improve your performance in solving letter series questions, you can follow these tips: 1. Practice regularly: Solve a variety of letter series questions to enhance your understanding of different patterns. 2. Develop pattern recognition skills: Train your brain to quickly identify patterns and rules followed in the series. 3. Analyze the given letters: Pay attention to the position, arrangement, and sequence of letters in the series. 4. Memorize the position of alphabets: Familiarize yourself with the positions of alphabets in the English alphabet series. 5. Solve mock tests: Take mock tests or practice question papers to simulate exam-like conditions and improve your speed and accuracy.
 5. What are some common letter series patterns to look out for?
Ans. Some common letter series patterns to look out for are: 1. Alphabetical order: The series follows the sequential order of alphabets, either forward or backward. 2. Skip pattern: The series skips one or more letters in a particular pattern. 3. Repeating pattern: Certain letters or groups of letters repeat in the series at regular intervals. 4. Incremental pattern: The position of letters increases by a fixed number or pattern in each step of the series. 5. Alternate pattern: The series alternates between two or more sets of letters or follows a specific alternating pattern.

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