Question

If PUNCTUAL can be written as 47819765, how can LUNA be written in that code?

• A. 7586
• B. 5678
• C. 5786
• D. 5867

Hint:

In coding-decoding questions, always check for repeating letters in the source word (like 'U' in PUNCTUAL). If they map to the same digit, it confirms that the question uses direct position-based substitution.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This is a direct letter-coding problem where each letter in a given word is assigned a specific single-digit number. We need to identify the digits assigned to the letters of "LUNA" to find its code.


Step 2: Detailed Explanation:
Let's map each letter of the word "PUNCTUAL" to its corresponding digit in the code "47819765":
P \( \rightarrow \) 4
U \( \rightarrow \) 7
N \( \rightarrow \) 8
C \( \rightarrow \) 1
T \( \rightarrow \) 9
U \( \rightarrow \) 7 (Notice that 'U' is consistently coded as 7, confirming a direct mapping)
A \( \rightarrow \) 6
L \( \rightarrow \) 5
Now, we extract the codes for the letters in the word "LUNA":
L \( \rightarrow \) 5
U \( \rightarrow \) 7
N \( \rightarrow \) 8
A \( \rightarrow \) 6
Combining these digits in order, we get the code for LUNA as 5786.


Step 3: Final Answer:
The code for LUNA is 5786.