Difficulty: Medium
Correct Answer: LAUNCH
Explanation:
Introduction / Context:
This analogy employs the classic Atbash (mirror-alphabet) cipher, where each letter maps to its mirror from the opposite end of the alphabet (A↔Z, B↔Y, C↔X, …). Recognizing Atbash is useful in many coding-decoding contexts.
Given Data / Assumptions:
Concept / Approach:
To decode OZFMXS, apply Atbash to each letter: original = mirror of encoded. Then match the resulting plaintext to one of the options.
Step-by-Step Solution:
Verification / Alternative check:
Because Atbash is an involution, encoding and decoding are identical operations. One forward pass suffices to verify both directions.
Why Other Options Are Wrong:
Common Pitfalls:
Confusing Atbash with Caesar shifts or forgetting it maps A↔Z, B↔Y, etc. Always write the mirror pairs or remember the formula: position′ = 27 − position.
Final Answer:
LAUNCH
Discussion & Comments