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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. PL-QN-STJF-KH-MN
MI-NK-PQ
TP-UR-WY
SO-TQ-VX
QM-RO-TV
MI-NK-PQ
Identify the internal pattern of each pair: the first letter jumps by +2, while the second letter moves by -1, repeating consistently across all pairs in the triad.
Identify the internal pattern of each pair: the first letter jumps by +2, while the second letter moves by -1, repeating consistently across all pairs in the triad.
Analyze the pattern
Examine the transformation within each pair. In PL-QN-ST: P(16)+1=Q(17), L(12)+2=N(14). In JF-KH-MN: J(10)+1=K(11), F(6)+2=H(8). The logic for the first letter of each pair is +1, and for the second letter is +2 relative to the previous pair.
Test Option A: MI-NK-PQ
Let's check the progression between pairs: Pair 1 (MI) to Pair 2 (NK): M(13)+1=N(14), I(9)+2=K(11). Pair 2 (NK) to Pair 3 (PQ): N(14)+2=P(16), K(11)+6=Q(17). Wait, checking the consistency: P(16) to Q(17) is +1, L(12) to N(14) is +2, N(14) to S(19) is +5, N(14) to T(20) is +6. Let's re-evaluate: Pair 1 to Pair 2 is (+1, +2), Pair 2 to Pair 3 is (+2, +6). Testing option A (MI-NK-PQ): M+1=N, I+2=K; N+2=P, K+6=Q. This matches the established pattern perfectly.
B: TP-UR-WY doesn't follow the (+1, +2) then (+2, +6) shift; C: SO-TQ-VX shows incorrect transitions; D: QM-RO-TV displays inconsistent letter gaps.
A is correct because it follows the established positional increment pattern (+1, +2) between the first and second pairs, and (+2, +6) between the second and third pairs.
Always verify both letters of a pair independently, as most complex reasoning questions use dual-track progression rules.
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