Four letter-clusters have been given in the options, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.
Answer & explanation
Correct answer: option 4
1 2 3 4 5 6 7 8 9 10 11 12 13
A B C D E F G H I J K L M
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
Z Y X W V U T S R Q P O N
26 25 24 23 22 21 20 19 18 17 16 15 14
THE LOGIC FOLLOWED HERE IS;
1) MQTXA,
M → (+4) → Q → (+3) → T → (+4) → X → (+3) → A
2) SWZDG,
S → (+4) → W → (+3) → Z → (+4) → D → (+3) → G
3) JNQUX,
J → (+4) → N → (+3) → Q → (+4) → U → (+3) → X
4) PTXBF,
P → (+4) → T → (+4) → X → (+4) → B → (+4) → F
Thus, PTXBF is the odd one.