Select the letter cluster that will replace the question mark (?) in the following series.
BF, CH, ?, HO, LT
Answer & explanation
Correct answer: option 3
Next alphabet in the series is :
B → (+1)→ C → (+2)→ E → (+3)→ H → (+4) → L
F → (+2) → H → (+3)→ K → (+4)→ O → (+5)→T