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Find the missing term: B2D, D4F, F6H, H₈J,?
J10L
J12L
I₁₀K
J10K
J10L
Observe the first and last letters follow a +2 increment, and the middle number follows a +2 increment independently.
Observe the first and last letters follow a +2 increment, and the middle number follows a +2 increment independently.
Analyze the first letter
The first letters are B(2), D(4), F(6), H(8). Following the pattern +2: H + 2 = 10, which corresponds to the 10th letter, J.
Analyze the middle number
The numbers are 2, 4, 6, 8. Following the pattern +2: 8 + 2 = 10.
Analyze the last letter
The last letters are D(4), F(6), H(8), J(10). Following the pattern +2: J + 2 = 12, which corresponds to the 12th letter, L.
B: 12 is incorrect because the number increment is +2, making it 10; C: I is incorrect because the first letter must be J (H+2); D: 10K is incorrect because the last letter must be L (J+2).
A is correct because the series follows a consistent +2 rule for the first letter, the middle number, and the last letter, resulting in J, 10, and L.
In alphanumeric series, always break the term into components and solve each segment separately to avoid confusion.