How to Prepare Pair Formation for RRB PO?

RRB PO is one of the toughest banking exams. Usually, students prepare for complex topics such as Puzzles and seating arrangements, and often put less effort into topics such as Pair Formation. But it is one of the simplest yet scoring topics in the Reasoning Ability section of the RRB PO Prelims exam. This blog explains the complete strategy, important tips, and examples to help you master Pair Formation questions for RRB PO 2025.

Download Pair Formation Questions for RRB PO Exam 2025

In this section, we are providing Pair Formation questions for the RRB PO Exam 2025. These are curated by our experts after analysing previous years’ patterns. Download Now and practice as many questions as you can.

What are Pair Formation Questions?

In Pair Formation questions, a word is given, and you must count how many pairs of letters in that word have the same number of letters between them as they have in the English alphabet order.

For example:
Word – EXAM
To solve this, we compare each letter with every letter after it, counting how many have the same spacing as in the alphabet.

These questions typically appear in sets of 1–2 in the Reasoning section and can be solved in less than 30 seconds with the right method.

Reasoning Section RRB PO Exam Pattern Overview

Pair Formation belongs to the Alphabetical Series and shares conceptual overlap with topics like Coding-Decoding, Alphabet Test, and Letter Rearrangement.

Step-by-Step Approach to Solve Pair Formation Questions in RRB PO 2025 Exam

In this article, we have given a step-by-step approach to solving the pair formation questions in the RRB PO Exam.

Step 1. Write the Alphabet Positions

Write down the positions of letters (A=1, B=2, C=3, …, Z=26).
This helps visualise the distance between two letters quickly.

Step 2. Compare Each Letter Sequentially

Start with the first letter and check how many letters after it maintain the same gap as they do in the alphabet.

Step 3. Count Both Forward and Backwards Pairs (if specified)

Sometimes the question may say “from both directions.”
This means you need to check letter pairs both from left to right and right to left.

Step 4. Mark and Double-Check

Mark the pairs you have counted and recheck once to avoid missing or repeating pairs.

Example Question

Q1. How many such pairs of letters are there in the word TRAINING which have as many letters between them in the word as in the English alphabet?

Solution:
Let’s assign positions:
T(20), R(18), A(1), I(9), N(14), I(9), N(14), G(7)

Now check sequentially —

1. Between T and R → difference = 2 (not matching alphabet sequence)
2. Between R and N → difference = 4 (does not match)
3. Between A and G → difference = 6 (matches alphabet difference of A-G = 6)

Answer: 1 pair (A-G)

Common Variations Asked in RRB PO Exams

1. Forward Direction Only:
   “How many such pairs of letters are there in the word, when counted in the forward direction only?”
2. Both Directions:
   “How many such pairs of letters are there in the word which have the same number of letters between them in both directions?”
3. Alphabet Series Mix:
   Combined with an alphabet sequence question, where you have to find pairs after rearranging or reversing the word.

Tips to Master Pair Formation Questions

1. Memorise Alphabet Positions:
You should instantly recall positions (A=1, M=13, Z=26). Practice writing them daily for a week; this will help you retain the information for a longer period of time.

2. Practice with 20+ Words:
Start with simple words (TRAIN, EXAM, BANKER) and then move to long words (DEVELOPMENT, STATISTICS). This will build momentum and hence help in continuous preparation.

3. Check Directional Condition Carefully:
Whether it’s forward only or both directions, check the given direction instructions carefully, as this changes the answer.

4. Use Elimination Logic:
If the word length is small (like 4–5 letters), you can directly check all pairs. For longer words, note positions and calculate the differences quickly.

5. Don’t Overthink:
This is not a logic puzzle; treat it as a pattern-based observation exercise.

Conclusion

Pair Formation may look simple, but it is a golden opportunity to boost your Reasoning score. In a paper where every second counts, mastering such short topics can make the difference between qualifying and missing the cutoff. Practice consistently, stay calm, and use the downloadable PDF to improve your accuracy. To solve questions from more such topics, you can buy our test series, where you can reattempt the full-length mock tests and get a Detailed Comparison with the Topper, compare your Time, Score, Accuracy, Correct/Wrong Answers, and even the Average Performance side-by-side. 

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