Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. C G K, G K O, KO S, O S W, ?

• A. SDA
• B. KNB
• C. SWA
• D. KJH

Answer 1

Answer:

C. SWA

Look at the pattern in each position:

Series:
C G K
G K O
K O S
O S W
?

Now track each column separately:

• 1st letters: C → G → K → O → S (each step +4)

• 2nd letters: G → K → O → S → W (each step +4)

• 3rd letters: K → O → S → W → A (each step +4, after Z it wraps to A)

So the next term is:

S W A