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What should come in place of the question mark (?) in the given series based on the English alphabetical order? STA, WXE, ABI, EFM, ?
IJQ
JPS
JIS
KKP
IJQ
Observe the first, second, and third letters of each cluster independently; each follows a consistent +4 addition pattern in the English alphabet cycle.
Observe the first, second, and third letters of each cluster independently; each follows a consistent +4 addition pattern in the English alphabet cycle.
Analyze the first letters of each cluster
S (19) → W (23) → A (1) → E (5) →? (9). The pattern is +4. 19+4=23, 23+4=27(A), 1+4=5(E), 5+4=9(I). The first letter is I.
Analyze the second letters of each cluster
T (20) → X (24) → B (2) → F (6) →? (10). The pattern is +4. 20+4=24, 24+4=28(B), 2+4=6(F), 6+4=10(J). The second letter is J.
Analyze the third letters of each cluster
A (1) → E (5) → I (9) → M (13) →? (17). The pattern is +4. 1+4=5, 5+4=9, 9+4=13, 13+4=17(Q). The third letter is Q.
B: JPS is wrong because the third letter follows the +4 logic to result in Q, not S. C: JIS is wrong as the second letter is J but the third is Q, not S. D: KKP is wrong because the first letter is I, not K, and the sequence follows a +4 increment.
A is correct because applying a consistent +4 alphabetical shift to each position in the triplet STA results in IJQ.
When dealing with alphabetical clusters, always break the cluster into individual character streams; 90 percent of these questions rely on parallel arithmetic progressions for each position.
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