Select the letter-cluster that can replace the question mark (?) in the following series.
ADG, CGK, EJO, ? , IPW
Answer & explanation
Correct answer: option 4
Explanation:
ADG, CGK, EJO, ? , IPW
The logic followed here is :
A → (+2) → C → (+2) → E → (+2) → G → (+2) → I
D → (+3) → G → (+3) → J → (+3) → M → (+3) → P
G → (+4) → K → (+54) → O → (+4) → S → (+4) → W
So, the letter-cluster that replaces the (?) to complete the series is "GMS"