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CAT 2025 » CAT Study Material » Data Interpretation and Logical Reasoning » Key Notes on Alphabetical Series
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Key Notes on Alphabetical Series

This article contains key notes on alphabetical series, alphabetical series questions and alphabet series reasoning tricks.

Table of Content
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Alphabetic Arrangement is the process of organising known alphabet letters that are supplied as jumbled letters or in word form sequence. Patterns of words or letters in general are created when the configuration of letters or words sequence combines two or more patterns of letters, including numbers and symbols, with equal occurrence and all together forming a pattern in general.

As a result, questions in the Alphabet Test are dependent on locating an English letter to the left or right of another English letter in alphabetical sequence. The number of English letters between two different letters is sometimes the subject of a question.  Depending on the alphabetical sequence, the format of these questions differs. Backward, first half backward, second half backward, numerous letter segments in reverse sequence, and so on are all possibilities. Some of the problems in this part ask you to discover the centre letter of two letters, and others ask you to identify which letters do not change their positions following the alphabetical order.

Tricks for Alphabetical Series

The many formulas linked to the Alphabet Test reasoning part can be found here.

Formula 1: (Based on Simple Series)

Left – Left = Starting from the left.

Left + Right = Starting from the right end.

Right – Right = Starting from the right end.

Right + Left = Starting from the left end.

Formula 2: (Based on Operation Series)

Candidates must sequence the procedures as directed in the question to answer this sort of question.

Step 1: The vowels are swapped with the following letter.

Step 2: Replace the symbols with 8.

Step 3: Increase the numbers by one.

Note: Candidates may consult the “Points to Remember” portion of this article for additional formulas relating to the Alphabet Test reasoning segment.

Questions on Alphabetical Series

Q1. DEW BIG RAW FAN DOG, how many meaningful words are formed if the first and last alphabets of each word are swapped?

Answer: Four. If we exchange the alphabets for the given series: DEW BIG RAW FAN DOG, we get: WED GIB WAR NAF GOD, with meaningful words like WED, GIB, WAR, and GOD.

Q2. A B 6 P 7 2 Z @ X ? V T W # & N S L %, which element is 4th to right of the 11th element from the left end?

Answer: 11th element from the left end of the given series is V (A B 6 P 7 2 Z @ X ? V T W # & N S L %).

And the 4th element to the right of the 11th element is & (A B 6 P 7 2 Z @ X ? V T W # & N S L %).

Q3. How many meaningful English words can be made using only the fourth, fifth, seventh, and thirteenth letters of INTERNATIONAL?

Answer: Because the letters E, R, A, and L are the 4th, 5th, 7th, and 13th letters of INTERNATIONAL, meaningful words such as Real, Earl, and Rale can be constructed (3 words).

Q4. Which of the following will be the fourth letter of the word INFORMATION if only one meaningful English word can be made with the first, fifth, sixth, and eighth letters of the word INFORMATION? Give “X” as an answer if no such word can be made, and “Y” as an answer if more than one such word can be made.

Answer: I, R, M, and T are the first, fifth, sixth, and eighth letters of the word INFORMATION, respectively. If you look closely, you’ll notice that there’s only one word that fits, and that word is TRIM. That word’s fourth letter is M, so the solution is “M.”

EJOTY Concept

With the help of this basic concept, you can effortlessly memorise the positions of alphabets and find the position of any letter without much effort. However, it is recommended that you master the alphabet’s letter locations. E=5, J=10, O=15, T=20, Y=25.

For example, we’re supposed to discover the 24th letter from the alphabet’s left side. We already know that the 25th letter from the left is Y; now we must locate the letter preceding Y, which is X. We can simply find the position of any letter in the alphabet using this easy method. Memorizing the places and sequence of letters is a prerequisite for answering any question of this nature, therefore make an effort to memorise them. As a result, you should put EJOTY into practice. Make a list of ten of your friends’ names and follow the instructions below: Let’s use the name RAVI as an example. We know that the letter R stands for the number 18 according to EJOTY. A stands for one, V for twenty-two, and I for nine. We get (18+1+22+9) when we add all of these numbers together. This is a great technique to memorise all of the letters in the alphabet’s locations.

Fill in the blanks Series

These series are made up of little letters that follow a precise pattern or sequence. Between each series, certain spaces are left blank. To construct a pattern, we must fill in the blanks using options provided. This illustration exemplifies what I’m talking about:

Q. pq_ _ qpp_ _ pq _

1. ppppp

2. ppqpp

3. ppqpq

4. qppqq

Solve: To solve these types of series, we need fill in the blanks one at a time, examining each choice to find where it forms a logical pattern. When you try to fill in the first option, it turns as pqppqpppppppp. It doesn’t lead to any sort of logical pattern. Pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/pqp/ For your convenience, the symbol “/” has been used to separate it. This has now developed a habit of writing pqp over and over again. As a result, the second option is the proper response to this question.

Conclusion

To answer these types of questions, you don’t need to be an expert in rocket science. Everyone can solve these questions with enough practice. For example, there may be questions in which you must find English letters between two English alphabets. You’ll also have to figure out which English letter is to the right or left of the one given in the question.

Depending on how the alphabets are arranged, the questions may differ. It could be backward, second half backward, or numerous letter segments in a different order in some questions, for example. In some problems, you will be asked to locate the letters that do not change when their alphabetic order changes, while in others, you will be asked to find the middle letter of two provided English letters. It’s vital to keep in mind the forward and backward positions of all the alphabets, as well as their numbers, when answering questions in alphabetical order.

faq

Frequently asked questions

Get answers to the most common queries related to the CAT Examination Preparation.

Q1. In a forward alphabetical sequence, state the fifth letter to the left of the 11th letter from the left.

Anwer:. In this type of question, we must first locate the eleventh letter in the forward series from the left, whic...Read full

Q2. How many pairs of letters in the word ‘CHAIRS’ have almost the same number of letters in the word as in the alphabet?

Answer: There is one letter H between C and A in this case, and one letter B between them in normal alphabets. While...Read full

Q3. Find the missing word JAF, JEF, JIF, JOF, ?

Answer: The middle letters, which are vowels, are rising in number: A, E, I, O, U, with the remaining letters remain...Read full

Q4. Solve the given series _ xx _ yx _ yy _ xy _ xxy.

Answer: The series is yxxy/yxxy/yxxy/yxxy. Thus, the pattern ‘yxxy’ is repeated.

Q5. Solve the series x_ p _ y _ _ pzy _ _ pzy.

Answer: The series is xypzy/ xypzy/ xypzy. Thus, the pattern ‘ xypzy’ is repeated.

Anwer:. In this type of question, we must first locate the eleventh letter in the forward series from the left, which is as follows: A B C D E F G H I J K A B C D E F G H I J K A B C D E F G H I K is the eleventh letter in the series; we must now proceed five letters to the left from the eleventh letter, which will be: K J I H G. As a result, G is the correct answer.

Answer: There is one letter H between C and A in this case, and one letter B between them in normal alphabets. While there are no letters between R and S, which is the same as in the alphabets, there are no letters between R and S. Hence, the correct answer is 3.

Answer: The middle letters, which are vowels, are rising in number: A, E, I, O, U, with the remaining letters remaining unchanged. As a result, the solution is JUF.

Answer: The series is yxxy/yxxy/yxxy/yxxy. Thus, the pattern ‘yxxy’ is repeated.

Answer: The series is xypzy/ xypzy/ xypzy. Thus, the pattern ‘ xypzy’ is repeated.

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