Concept:Each pair follows a fixed pattern: the first letter increases by 7 positions, the second letter decreases by 3 positions, and the number increases by 180.
Explanation:Consider the pair BM520 : IJ700.
B (2nd letter) + 7 = I (9th letter).
M (13th letter) – 3 = J (10th letter).
Number 520 + 180 = 700.
Now check EK710 : LH890.
E (5th) + 7 = L (12th).
K (11th) – 3 = H (8th).
Number 710 + 180 = 890.
Apply the same steps to AL400.
A (1st) + 7 = H (8th).
L (12th) – 3 = I (9th).
Number 400 + 180 = 580.
Thus, the missing term is HI580.
Answer:HI580 (Option B)
