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Which of the following options should come in place of the question mark (?) in the given series based on the English alphabetical order? SHK, WLO, APS, ETW,?
IXB
IXA
JXA
IYA
IXB
Look at each letter position independently across terms to find the arithmetic sequence (+4, +4, +4, etc.), remembering to wrap around the 26 letters of the English alphabet if needed.
Look at each letter position independently across terms to find the arithmetic sequence (+4, +4, +4, etc.), remembering to wrap around the 26 letters of the English alphabet if needed.
Analyze 1st Letters
S (19), W (23), A (1), E (5). Each letter increases by +4 (mod 26). Therefore, E (5) + 4 = 9, which corresponds to 'I'.
Analyze 2nd Letters
H (8), L (12), P (16), T (20). Each letter increases by +4. Therefore, T (20) + 4 = 24, which corresponds to 'X'.
Analyze 3rd Letters
K (11), O (15), S (19), W (23). Each letter increases by +4. Therefore, W (23) + 4 = 27, which wraps around the alphabet (27 - 26 = 1), corresponding to 'A'.
Combine Letters
Combining the derived letters (I, X, A) gives the final term IXA, which matches Option B.
A: IXB has incorrect third letter B instead of A. C: JXA has incorrect first letter J instead of I. D: IYA has incorrect second letter Y instead of X.
B is correct because each position follows a strict +4 alphabetical advancement rule: S тЖТ W тЖТ A тЖТ E тЖТ I for the first letter, H тЖТ L тЖТ P тЖТ T тЖТ X for the second letter, and K тЖТ O тЖТ S тЖТ W тЖТ A for the third letter.
When analyzing multi-letter series, always separate the terms positionally (1st with 1st, 2nd with 2nd, etc.) rather than looking at the word as a single entity.
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