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If 'RAT' is coded as 'SB U' and 'CAT' is coded as 'DB U', what is the code for 'DOG'?
EPH
EPG
EQH
EQG
EPH
Apply a simple +1 shift to each letter position in the input word.
Apply a simple +1 shift to each letter position in the input word.
Analyze the pattern
Compare the letters: R(18) to S(19) is +1, A(1) to B(2) is +1, T(20) to U(21) is +1. Similarly for CAT: C(3) to D(4) is +1, A(1) to B(2) is +1, T(20) to U(21) is +1.
Apply logic to DOG
D(4) + 1 = E(5), O(15) + 1 = P(16), G(7) + 1 = H(8). The resulting letters are E, P, and H.
B: EPG is wrong because the third letter G does not follow the +1 shift from G. C: EQH is wrong because the second letter Q is a +2 shift from O. D: EQG is wrong because both the second and third letters do not follow the +1 shift pattern.
A is correct because applying a consistent +1 alphabetical shift to each letter of DOG results in EPH.
In coding-decoding questions, always check for consistent incremental shifts (e.g., +1, +2, -1) before looking for more complex logic like reversal or vowel-consonant variations.