Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
MY 27, KZ 64, ?, GB 216, EC 343
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. IA 125.
Logic: First Letter - 2 , Second Letter + 1 , Number = cube starting from 27
M - 2 = K; K - 2 = I; I - 2 = G; G - 2 = E;
Y + 1 = Z; Z + 1 = A; A + 1 = B; B + 1 = C;
(3)3 = 27; (4)3 = 64; (5)3 = 125; (6)3 = 216; (7)3 = 343