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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? BDG, DFI, FHK, HJM, JLO,?
LNQ
OPR
POR
NLQ
LNQ
Observe the first, second, and third letters of each triplet independently: each follows a +2 jump in the English alphabet (B+2=D, D+2=F... / D+2=F, F+2=H...).
Observe the first, second, and third letters of each triplet independently: each follows a +2 jump in the English alphabet (B+2=D, D+2=F... / D+2=F, F+2=H...).
Analyze the first letters
The first letters are B(2), D(4), F(6), H(8), J(10). Each letter increases by 2. The next letter should be 10 + 2 = 12, which is L.
Analyze the second letters
The second letters are D(4), F(6), H(8), J(10), L(12). Each letter increases by 2. The next letter should be 12 + 2 = 14, which is N.
Analyze the third letters
The third letters are G(7), I(9), K(11), M(13), O(15). Each letter increases by 2. The next letter should be 15 + 2 = 17, which is Q.
B: OPR is incorrect because the logic requires the starting letter to be L. C: POR is incorrect because it starts with P and does not follow the +2 increment pattern. D: NLQ is incorrect because the starting letter must be L, not N.
A is correct because the series follows a consistent +2 increment for each position in the triplet (B+2=D, D+2=F, F+2=H, H+2=J, J+2=L for the first letter; D+2=F, F+2=H, H+2=J, J+2=L, L+2=N for the second; G+2=I, I+2=K, K+2=M, M+2=O, O+2=Q for the third).
For multi-letter series, always analyze each position (1st, 2nd, 3rd) as an independent sequence. This prevents confusion caused by looking at the triplet as a whole.
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