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What should come in place of the question mark (?) in the given series based on the English alphabetical order? PEB, SIE, VMH, YQK, BUN, ?
CSL
EXQ
EYQ
DQM
EYQ
Observe the first, second, and third letters of each cluster independently; each follows a consistent arithmetic progression across the sequence.
Observe the first, second, and third letters of each cluster independently; each follows a consistent arithmetic progression across the sequence.
First Letter Analysis
P(16) → S(19) (+3), S(19) → V(22) (+3), V(22) → Y(25) (+3), Y(25) → B(2) (+3), B(2) → E(5) (+3). The first letter is E.
Second Letter Analysis
E(5) → I(9) (+4), I(9) → M(13) (+4), M(13) → Q(17) (+4), Q(17) → U(21) (+4), U(21) → Y(25) (+4). The second letter is Y.
Third Letter Analysis
B(2) → E(5) (+3), E(5) → H(8) (+3), H(8) → K(11) (+3), K(11) → N(14) (+3), N(14) → Q(17) (+3). The third letter is Q.
A: CSL does not follow the +3, +4, +3 pattern for the letters; B: EXQ results from incorrect increments for the second position; D: DQM results from incorrect increments for the first and second positions.
C is correct because the series follows a consistent pattern of +3 for the first letter, +4 for the second letter, and +3 for the third letter across all terms, resulting in EYQ.
For alphabetical series, always write the numerical rank of letters (A=1, Z=26) immediately to avoid counting errors and reveal hidden arithmetic progressions quickly.
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