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What should come in place of the question mark (?) in the given series based on the English alphabetical order PRT, LNP, HJL, DFH, ?
YAD
ZAD
YBD
ZBD
ZBD
Observe the first letters of the clusters: P(16), L(12), H(8), D(4). The series decreases by 4 letters each time, so the next starts with 4-4 = 0, which corresponds to Z (wrapping around 26 letters).
Observe the first letters of the clusters: P(16), L(12), H(8), D(4). The series decreases by 4 letters each time, so the next starts with 4-4 = 0, which corresponds to Z (wrapping around 26 letters).
Analyze the first letter of each cluster
P(16), L(12), H(8), D(4). Pattern: -4. Next is 4 - 4 = 0. In a cyclic alphabet, 0 represents Z.
Analyze the second letter of each cluster
R(18), N(14), J(10), F(6). Pattern: -4. Next is 6 - 4 = 2. 2 corresponds to B.
Analyze the third letter of each cluster
T(20), P(16), L(12), H(8). Pattern: -4. Next is 8 - 4 = 4. 4 corresponds to D.
A: Starts with Y, whereas the logic dictates Z. B: Middle letter is A, whereas the logic dictates B. C: Starts with Y, whereas the logic dictates Z.
D is correct because following the -4 position shift for every letter in the cluster (P-4=L, L-4=H, H-4=D, D-4=Z; R-4=N, N-4=J, J-4=F, F-4=B; T-4=P, P-4=L, L-4=H, H-4=D) yields the cluster ZBD.
When dealing with letter series that go beyond A or Z, treat the alphabet as a 26-unit circular clock to handle wraparound values easily (e.g., A is 1 or 27, Z is 26 or 0).
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