Question

Coding Decoding: If in a certain code language, "APPLE" is written as "BQQMF", how would "MANGO" be written in the same code?

• A. NBPHP
• B. NBOHP
• C. NCPHQ
• D. MBOHP

Hint:

In coding-decoding problems, look for patterns of shifts in the alphabet or other transformations.

Answer 1

The Correct Option is B

Step 1: Problem Identification
Coding-decoding problems involve replacing letters in a word with others according to a defined pattern. The example "APPLE" coded as "BQQMF" demonstrates a letter-for-letter substitution. The objective is to discern this pattern and apply it to "MANGO."

Step 2: Pattern Analysis
Comparing "APPLE" and "BQQMF" position by position reveals the following correspondences:

• A → B
• P → Q
• P → Q
• L → M
• E → F

A common coding method is a fixed alphabetical shift. Examining the shifts: A to B (+1), P to Q (+1), L to M (+1), and E to F (+1). The consistent +1 shift indicates the rule is to advance each letter by one position in the alphabet.

Step 3: Pattern Verification
Applying the +1 shift rule to "APPLE" confirms the pattern:

• A + 1 = B
• P + 1 = Q
• P + 1 = Q
• L + 1 = M
• E + 1 = F

This yields "BQQMF," validating the +1 shift rule.

Step 4: Application to "MANGO"
Encoding "MANGO" using the established +1 shift rule:

• M → N
• A → B
• N → O
• G → H
• O → P

Therefore, "MANGO" is encoded as "NBOHP."

Step 5: Conclusion
The coded equivalent of "MANGO," based on a +1 letter shift, is NBOHP.

Problem-Solving Tips

• Identify Patterns: Determine if the letter shift is uniform or variable.
• Utilize the Alphabet: Referencing the alphabet aids in tracking letter positions and shifts.
• Practice: Reinforce understanding by encoding additional words with the same rule.
• Review: Cross-check the result, potentially by reversing the coding process.