Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
GF, KI, OL, SO, ?
Answer & explanation
Correct answer: option 2
Explanation:
GF, KI, OL, SO, ?
The logic followed here is :
G → (+4) → K → (+4) → O → (+4) → S → (+4) → W
F → (+3) → I → (+3) → L → (+3) → O → (+3) → R
So, the letter-cluster that replaces the (?) to complete the series is "WR"