Based on the English alphabetical order, three of the following four letter-clusters arealike in a certain way and thus form a group. Which letter-cluster DOES NOT belong tothat group? (Note: The odd one out is not based on the number of consonants/vowelsor their position in the letter-cluster.)

Logic: 1st letter - 10 = 2nd letter and 2nd letter - 10 = 3rd letter

Now, we check each options.

Option (a): PFV (Follow)

P - 10 = F, F - 10 = V

Option (b): IXN (Not Follow)​

I - 10 $$\neq$$ X, X - 10 = N

Option (c): ZPF (Follow)​

Z - 10 = P, P - 10 = F

Option (d): JZP (Follow)​

J - 10 = Z, Z - 10 = P

Thus, correct option is (b).