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What should come in place of the question mark (?) in the given series based on the English alphabetical order? ECG, IGK, MKO, QOS, ?
URV
USW
USV
TSV
USW
Observe the first, second, and third letters of each cluster independently; each follows a consistent +4 jump sequence in the alphabet.
Observe the first, second, and third letters of each cluster independently; each follows a consistent +4 jump sequence in the alphabet.
Analyze the first letter of each cluster
The first letters are E(5), I(9), M(13), Q(17). The pattern is +4 (5+4=9, 9+4=13, 13+4=17). Therefore, the next letter is 17+4 = 21, which corresponds to U.
Analyze the second letter of each cluster
The second letters are C(3), G(7), K(11), O(15). The pattern is +4 (3+4=7, 7+4=11, 11+4=15). Therefore, the next letter is 15+4 = 19, which corresponds to S.
Analyze the third letter of each cluster
The third letters are G(7), K(11), O(15), S(19). The pattern is +4 (7+4=11, 11+4=15, 15+4=19). Therefore, the next letter is 19+4 = 23, which corresponds to W.
A: URV results in a different third letter (V=22 instead of 23), C: USV results in a different third letter (V=22 instead of 23), D: TSV starts with T=20 instead of U=21.
B is correct because the series follows a consistent +4 progression for each character position, leading to U, S, and W respectively.
For alphabetical series, always assign numeric values to letters (A=1, B=2...) to quickly convert character puzzles into simple arithmetic sequences.
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