Select the letter pair that will replace the question mark (?) in the following series.
AY, EU, IQ, MM, QI, ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → UE
The first letters move 4 places forward and the second letters move 4 places back.
First letters A, E, I, M, Q: each is 4 places after the previous one, so the next is U
Second letters Y, U, Q, M, I: each is 4 places before the previous one, so the next is E
So the missing pair is UE.