In a certain code, DOG is written as GRJ, then how will CAT be written in that code?

Appeared in: RRB Staff Nurse Kolkata-2015

Explanation

The question follows a simple letter-shifting pattern in alphabetical order.
Each letter in the original word is shifted forward by a fixed number of positions.
In the example 'DOG' -> 'GRJ', each letter (D, O, G) is moved forward by 3 places to get (G, R, J).
Applying this +3 shift to 'CAT' results in 'F' (from C), 'D' (from A), and 'W' (from T), giving the code 'FDW'.

Option A: This is incorrect. While 'F' and 'W' are correct for 'C' and 'T' with a +3 shift, the middle letter 'E' would imply a +4 shift for 'A', which is inconsistent with the pattern.
Option B: This is incorrect. 'F' is a correct +3 shift for 'C', but 'E' (+4 shift for 'A') and 'V' (+2 shift for 'T') do not follow the established +3 pattern.
Option D: This is incorrect. None of the letters 'E', 'D', or 'V' correspond to a consistent +3 shift from 'C', 'A', and 'T' respectively. 'E' is a +2 shift, 'D' is a +3 shift, and 'V' is a +2 shift.

Visual 1: Infographic - A visual chart showing the English alphabet with arrows indicating a '+3' shift for the letters in DOG and CAT to their corresponding coded letters.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning: Coding-Decoding as background academic context rather than a clinical decision trigger.
This type of logical reasoning question is not directly related to clinical practice but is a common component of nursing entrance exams to assess problem-solving and analytical skills.
Developing logical thinking helps in clinical decision-making, where nurses must identify patterns in patient symptoms and data to determine the correct course of action.
What if the code for DOG was 'FQI'? The pattern would be D(+2)F, O(+2)Q, G(+2)I. Applying this +2 shift to CAT would result in 'ECV'.

How to Approach the Question

First, analyze the relationship between the given word ('DOG') and its code ('GRJ').
Check for patterns like letter shifting (forward or backward), letter reversal, or opposite letters.
Determine the numerical position of each letter in the alphabet (A=1, B=2, ...).
For 'DOG' -> 'GRJ': D(4) -> G(7) is +3; O(15) -> R(18) is +3; G(7) -> J(10) is +3. The pattern is a consistent +3 shift.
Apply this identified pattern (+3 shift) to the target word 'CAT'.
C(3)+3 -> F(6); A(1)+3 -> D(4); T(20)+3 -> W(23). The result is 'FDW'.

Concept Tested & Keywords

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Practise the full RRB Staff Nurse Kolkata-2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.