Which of the following letter-clusters will replace the question mark (?) in the given series?
PK, GT, XC, OL, ?
Answer & explanation
Correct answer: option 4
Explanation:
PK, GT, XC, OL, ?
The logic followed here is :
P → (-9) → G → (-9) → X → (-9) → O → (-9) → F
K → (+9) → T → (+9) → C → (+9) → L → (+9) → U
So, the letter-cluster that replaces the (?) to complete the series is "FU"