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DGFB is related to EFGA in a certain way based on the English alphabetical order. In the same way, EGHC is related to FFIB. To which of the following is FDHB related, following the same logic?
GCIA
GCAO
GCAS
GCER
GCIA
Apply the shift pattern +1, -1, +1, -1 to the alphabetical positions of each letter across the sequence.
Apply the shift pattern +1, -1, +1, -1 to the alphabetical positions of each letter across the sequence.
Analyze the transformation pattern
Compare DGFB to EFGA: D(+1)=E, G(-1)=F, F(+1)=G, B(-1)=A. Pattern is +1, -1, +1, -1.
Verify pattern consistency
Apply to EGHC: E(+1)=F, G(-1)=F, H(+1)=I, C(-1)=B. This yields FFIB, confirming the +1, -1, +1, -1 rule.
Apply logic to FDHB
F(+1)=G, D(-1)=C, H(+1)=I, B(-1)=A. Resulting in GCIA.
B: GCAO is incorrect because the third and fourth letters do not follow the +1, -1 sequence. C: GCAS is incorrect because S is not the result of B-1. D: GCER is incorrect as it contains E and R which do not match the transformation pattern.
A is correct because applying the consistent transformation pattern of +1, -1, +1, -1 to the letters F, D, H, B results in G, C, I, A.
For coding-decoding questions involving short letter strings, always check for consistent +N/-N shifts before looking for more complex operations like reversal or vowel-based shifts.
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