Select the letter-cluster that can replace the question mark (?) in the following series.
AOS, CQU, ? , GUY, IWA
Answer & explanation
Correct answer: option 1
Explanation:
AOS, CQU, ? , GUY, IWA
The logic followed here is :
A → (+2) → C → (+2) → E → (+2) → G → (+2) → I
O → (+2) → Q → (+2) → S → (+2) → U → (+2) → W
S → (+2) → U → (+2) → W → (+2) → Y → (+2) → A
So, the letter-cluster that replaces the (?) to complete the series is "ESW"