Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series: GBDF, GHMR, GNVD, GTEP, ?

• A. GZMB
• B. GZNC
• C. GZNB
• D. GYNB

Answer 1

Answer:

C. GZNB

Let's examine each position in the letter cluster separately.

Series:

• GBDF

• GHMR

• GNVD

• GTEP

• ?

1st letter

G, G, G, G → constant → G

2nd letter

B (2), H (8), N (14), T (20)

Each increases by +6:

• 20 + 6 = 26 → Z

3rd letter

D (4), M (13), V (22), E (5)

Each increases by +9 (wrapping around after Z):

• 5 + 9 = 14 → N

4th letter

F (6), R (18), D (4), P (16)

Each increases by +12 (wrapping around):

• 16 + 12 = 28 → 2 → B

So the next letter-cluster is:

GZNB