Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. BRF, EUH, HXJ, KAL, ?

• A. NMB
• B. NKH
• C. NHG
• D. NDN

Answer 1

Answer:

D. NDN

Break the pattern by positions:

Series:
BRF
EUH
HXJ
KAL
?

1st letters: B → E → H → K → N (each +3)

2nd letters: R → U → X → A → D (each +3, after Z it wraps to A)

3rd letters: F → H → J → L → N (each +2)

So the next term is:

N D N