If EARTH is coded by replacing each letter with the one three places ahead, the code is
Correct answer: A. HDUWK
- A. HDUWK
- B. BXOQE
- C. HDUWJ
- D. FBSUI
Explanation
E becomes H, A becomes D, R becomes U, T becomes W and H becomes K, each three places forward. This particular shift is the Caesar cipher, historically used by Julius Caesar. Working letter by letter and writing the alphabet out in full prevents miscounts.
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About Coding and Decoding
Coding and decoding questions replace letters, numbers, words or symbols with another pattern and ask you to identify the rule or decode a new item. Methods include alphabet positions, shifts, reversals, substitution, rearrangement, numerical values and separate rules for different parts of a code.
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