Question

Three of the following four letter-clusters are alike in a certain way and thus form a group. Which is the letter-cluster that does NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their positions in the letter-cluster.)

• A. PTV
• B. CGI
• C. EIK
• D. GLM

Answer 1

Answer:

D. GLM

Let’s look at the alphabet positions of the letters in each cluster:

PTV → P(16), T(20), V(22)
Differences: +4, +2

CGI → C(3), G(7), I(9)
Differences: +4, +2

EIK → E(5), I(9), K(11)
Differences: +4, +2

GLM → G(7), L(12), M(13)
Differences: +5, +1

Pattern

In PTV, CGI, and EIK, the letters increase by +4 then +2 in alphabetical order.

GLM does not follow this pattern.

Odd one out: GLM