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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? BFW, DIS, FLO, HOK,?
JSG
KQE
KRF
JRG
JRG
Analyze the letter series column-wise across the terms: 1st letters follow +2, +1, +1, +2 sequence or alphabetical shifts; 2nd letters follow a distinct pattern; 3rd letters follow another shift. Alternatively, decode each term into numbers and find the exact arithmetic progression.
Analyze the letter series column-wise across the terms: 1st letters follow +2, +1, +1, +2 sequence or alphabetical shifts; 2nd letters follow a distinct pattern; 3rd letters follow another shift. Alternatively, decode each term into numbers and find the exact arithmetic progression.
Analyze 1st Letters
The first letters are B (2), D (4), F (6), H (8). The pattern increases by +2 each time. Continuing this pattern gives H (8) + 2 = J (10).
Analyze 2nd Letters
The second letters are F (6), I (9), L (12), O (15). The pattern increases by +3 each time. Continuing this pattern gives O (15) + 3 = R (18).
Analyze 3rd Letters
The third letters are W (23), S (19), O (15), K (11). The pattern decreases by -4 each time. Continuing this pattern gives K (11) - 4 = G (7).
Combine Letters
Combining the next letters gives J, R, and G, which forms the term JRG.
A: JSG is incorrect because the second letter should be R instead of S. B: KQE is incorrect as the positional letter shifts do not match +2, +3, -4. C: KRF is incorrect because the starting letter should be J.
D is correct because the series follows +2, +3, and -4 letter shifts respectively for each position, resulting in JRG.
When analyzing multi-letter series, always break down each position independently from left to right to uncover separate arithmetic sequences.
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