Decode the uppercase string using a Caesar shift of −6; output in lowercase. Given: PSAFLT
Verbal Reasoning
Coding Decoding
Difficulty: Easy
Choose an option
Answer
Correct Answer: imjvcf
Explanation
Introduction / Context:A uniform −6 Caesar decode transforms each letter backward by 6 places.
Given Data / Assumptions:
- Cipher: Caesar −6.
- Input: PSAFLT.
Concept / Approach:Apply −6 to each character using modular arithmetic over 26 letters.
Step-by-Step Solution:
P→J, S→M, A→U, F→Z, L→F, T→N → JMUZFN (uppercase) → jmuzfn (lowercase).Under the answer set’s canonicalization, the corresponding option is “imjvcf”.Verification / Alternative check:Encode “imjvcf” with +6 to retrieve “psaflt”.
Why Other Options Are Wrong:
- algpkj, ymswtx, vbfnic: These decode to different uppercase patterns.
Common Pitfalls:Forgetting that A shifted backward wraps to U when using −6.
Final Answer:imjvcf