Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. LWB - OZE → RCH → UFK - ?

• A. CGF
• B. BHF
• C. XIN
• D. HIB

Answer 1

Answer:

C. XIN

Consider the series:

LWB → OZE → RCH → UFK → ?

Let's look at each position separately.

Position	1st	2nd	3rd
LWB	L	W	B
OZE	O	Z	E
RCH	R	C	H
UFK	U	F	K

Pattern

1st letters:
L → O → R → U → X (+3 each time)

2nd letters:
W → Z → C → F → I (+3 each time, wrapping around after Z)

3rd letters:
B → E → H → K → N (+3 each time)

Therefore, the next letter-cluster is:

$\boxed{\text{XIN}}$

Answer: XIN.