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What should come in place of the question mark (?) in the given series based on the English alphabetical order? HNL, JPN, LRP, NTR, ?
VPT
PTV
VTP
PVT
PVT
Observe the first, second, and third letters of the clusters separately; each follows a consistent +2 increment pattern.
Observe the first, second, and third letters of the clusters separately; each follows a consistent +2 increment pattern.
Analyze the first letters
H(8), J(10), L(12), N(14). The pattern is +2. Next letter is 14 + 2 = 16, which is P.
Analyze the second letters
N(14), P(16), R(18), T(20). The pattern is +2. Next letter is 20 + 2 = 22, which is V.
Analyze the third letters
L(12), N(14), P(16), R(18). The pattern is +2. Next letter is 18 + 2 = 20, which is T.
A is incorrect because the first letter must be P; B is incorrect because the sequence follows +2, not arbitrary shifts; C is incorrect because the sequence requires the third letter to be T, not P.
D is correct because following the +2 increment pattern for each of the three positions in the cluster (H+2=J, J+2=L, L+2=N, N+2=P; N+2=P, P+2=R, R+2=T, T+2=V; L+2=N, N+2=P, P+2=R, R+2=T) results in PVT.
In alphabetical series, always break down clusters into individual character positions to identify independent arithmetic progressions.