Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.
Answer & explanation
Correct answer: option 2
XTZ ⇒ X→(-4)→ T→(+6) →Z
IFK ⇒ I→(-3)→ F→(+5) →K (ODD)
PLR ⇒ P→(-4)→ L→(+6) →R
GCI ⇒ G→(-4)→3→(+6) →I