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If 'HEALTH' is coded as 'GSZKGS', how is 'NORTH' coded?
MNQGS
MPQGS
MNSGR
OMQGS
MNQGS
Apply a minus one shift to the first three letters and opposite letter mapping to the final letters.
Apply a minus one shift to the first three letters and opposite letter mapping to the final letters.
Analyze the Coding Pattern
In the given coding of HEALTH to GSZKGS, the initial letters follow a backward positional shift while the latter letters follow opposite letter pairings.
Apply Rules to NORTH
Applying the same transformation rules to NORTH gives: N minus 1 is M, O minus 1 is N, R minus 1 is Q, T maps to its opposite letter G, and H maps to its opposite letter S, producing MNQGS.
B: MPQGS is incorrect due to an incorrect second letter code. C: MNSGR is incorrect because the final letters do not follow the required opposite mapping. D: OMQGS is incorrect due to an invalid starting letter transformation.
A is correct because applying the verified coding pattern to NORTH results in MNQGS.
For coding-decoding questions, test hybrid rules combining positional shifts and opposite letter pairs when uniform shifts fail.