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This bilingual Coding-Decoding question tests the exact transformation used in “Fill the missing letters: PQR, QRS, RST, ?, TUV”. It requires the learner to align letter positions, identify a uniform +1 alphabet shift, apply the rule consistently and verify STU against every position.
The verified answer to “Fill the missing letters: PQR, QRS, RST, ?, TUV” is STU, option C. This observation must be confirmed across every available letter position or every consecutive term before it is applied to the missing code. Applying the verified rule to the target expression produces STU. The alternatives STV, RTU and SUV fail because at least one position does not obey the same transformation. A useful final check is to map STU backward through the inverse operation and confirm that the original target is recovered.
FAQ
Common questions and clear answers for this topic.
STU, option C.
The question uses a uniform +1 alphabet shift.
STV, RTU, SUV violate the verified transformation at one or more positions.
Apply the inverse transformation to the selected code and verify the original target.
Coding Decoding is a type of Logical Reasoning question where words or letters are coded in a specific pattern and you need to decode them. For example if CAT is coded as FDW then each letter is shifted by 3 positions. It is one of the most important topics in SSC CGL, Bank PO, IBPS, and Railway competitive exams.
Types of Coding Decoding questions: Letter Coding (letters replaced by other letters), Number Coding (words coded as numbers), Symbol Coding (letters replaced by symbols), Mixed Coding (combination of numbers and letters), and Coding by Analogy. All these types are asked in SSC CGL, RRB NTPC, and Bank exams.
