Which letter cluster will replace the question mark (?) to complete the given series?
CBOM, FCQN, ?, LEUP, OFWQ
Answer & explanation
Correct answer: option 2
Explanation:
CBOM, FCQN, ?, LEUP, OFWQ
The logic followed here is :
C → (+3) → F → (+3) → I → (+3) → L → (+3) → O
B → (+1) → C → (+1) → D → (+1) → E → (+1) → F
O → (+2) → Q → (+2) → S → (+2) → U → (+2) → W
M → (+1) → N → (+1) → O → (+1) → P → (+1) → Q
So, the letter-cluster that replaces the (?) to complete the series is "IDSO"