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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? FRE, HTD, JVC, LXB,?
NZA
MZA
OYA
MYA
NZA
Look at each position independently: 1st letters increase by +2 (F→H→J→L→N), 2nd letters decrease by -2 (R→T? No, R→T is +2, R→P is -2. Let's re-verify: F(+2)H(+2)J(+2)L(+2)N; R(+2)T(+2)V(+2)X(+2)Z; E(-1)D(-1)C(-1)B(-1)A).
Look at each position independently: 1st letters increase by +2 (F→H→J→L→N), 2nd letters decrease by -2 (R→T? No, R→T is +2, R→P is -2. Let's re-verify: F(+2)H(+2)J(+2)L(+2)N; R(+2)T(+2)V(+2)X(+2)Z; E(-1)D(-1)C(-1)B(-1)A).
Analyze 1st Letters
The first letters follow a pattern of +2: F(6)+2=H(8), H(8)+2=J(10), J(10)+2=L(12), L(12)+2=N(14).
Analyze 2nd Letters
The second letters follow a pattern of +2: R(18)+2=T(20), T(20)+2=V(22), V(22)+2=X(24), X(24)+2=Z(26).
Analyze 3rd Letters
The third letters follow a pattern of -1: E(5)-1=D(4), D(4)-1=C(3), C(3)-1=B(2), B(2)-1=A(1).
B, C, and D are incorrect because they do not follow the derived +2, +2, -1 logic for the sequence NZA.
A is correct because the series follows a consistent logic: 1st letter +2, 2nd letter +2, 3rd letter -1, resulting in NZA.
In alphanumeric series, always break the term into individual letters and check each position's growth or decay separately to save time.
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