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Select the triad which follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. PU-RN-STSX-UQ-VW
HM-JF-KN
QV-SO-TW
EJ-GC-HK
KP-MI-NO
KP-MI-NO
Analyze the letter shifts between adjacent letters: PU тЖТ RN is (-2, -7), RN тЖТ ST is (+1, +6). Every triplet follows: Pair 1 to Pair 2 is (-2, -7), Pair 2 to Pair 3 is (+1, +6).
Analyze the letter shifts between adjacent letters: PU тЖТ RN is (-2, -7), RN тЖТ ST is (+1, +6). Every triplet follows: Pair 1 to Pair 2 is (-2, -7), Pair 2 to Pair 3 is (+1, +6).
Analyze Triplet 1 (PU-RN-ST)
Mapping: P тЖТ R (+2), U тЖТ N (-7). Then R тЖТ S (+1), N тЖТ T (+6). Pattern: (+2, -7) then (+1, +6).
Verify Triplet 2 (SX-UQ-VW)
Mapping: S тЖТ U (+2), X тЖТ Q (-7). Then U тЖТ V (+1), Q тЖТ W (+6). The pattern is consistent.
Check Option D (KP-MI-NO)
Mapping: K тЖТ M (+2), P тЖТ I (-7). Then M тЖТ N (+1), I тЖТ O (+6). This matches the pattern exactly.
A: HM-JF-KN does not follow +2/-7 then +1/+6. B: QV-SO-TW does not follow the shift sequence. C: EJ-GC-HK does not follow the shift sequence.
D is correct because KP-MI-NO follows the established shifting pattern of (+2, -7) followed by (+1, +6) for the letter pairs.
When faced with letter triplets, always write the numerical rank of letters (A=1, B=2...) to see the arithmetic difference between positions.