In a certain code language, 'MAKE' is coded as '6413' and 'PEAK' is coded as '4176'. What is the code for 'M' in the given code language?

Appeared in: RRB Nsg. Superintendent -29 April-2025 (shift-2nd)

Explanation

The method to solve this is by comparing the two given words and their codes to find common and unique elements.
The letter 'M' is unique to the word 'MAKE' when compared with 'PEAK'.
Similarly, the digit '3' is unique to the code '6413' (for MAKE) when compared with '4176' (for PEAK).
By matching the unique letter with the unique digit in the corresponding code, we can deduce that the code for 'M' is '3'.

Option A: The digit '6' is present in both codes ('6413' and '4176'), meaning it corresponds to one of the common letters (A, K, or E), not the unique letter M.
Option C: The digit '1' is present in both codes ('6413' and '4176'), so it represents a common letter (A, K, or E), not M.
Option D: The digit '4' is present in both codes ('6413' and '4176'), indicating it corresponds to a common letter (A, K, or E), not M.

Visual 1: Table - A comparative table showing the two words and their codes side-by-side, with columns highlighting the common and unique letters/digits to visually demonstrate the matching process.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning - Coding-Decoding by Comparison as background academic context rather than a clinical decision trigger.
This type of logical reasoning question assesses pattern recognition and deductive skills.
While not directly clinical, these analytical skills are crucial for nurses when interpreting patient data, identifying trends in vital signs, and troubleshooting equipment alarms.
What if the question asked for the code for 'P'? Following the same logic, 'P' is the unique letter in 'PEAK', and '7' is the unique digit in its code '4176'. Therefore, the code for 'P' would be '7'.

How to Approach the Question

First, write down the given words and their corresponding codes to have a clear view of the data.
Identify the target element the question is asking for, which is the code for the letter 'M'.
Compare the letters of the two words ('MAKE' and 'PEAK') to find which letters are common and which are unique.
Simultaneously, compare the digits of the two codes ('6413' and '4176') to find the common and unique digits.
Establish a logical connection: the unique letter in a word must correspond to the unique digit in its code.
Apply this logic to find the code for 'M', which is the unique letter in 'MAKE'.

Concept Tested & Keywords

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Practise the full RRB Nsg. Superintendent -29 April-2025 (shift-2nd)

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