Three of the following four letter clusters are alike in a certain way and one is different. Pick the odd one out.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. HDS.
1. The first and third letters are opposite of the alphabetic order.
2. For the second letter → subtract '2' from the first letter
CAX: C⇔X, C - 2 = A
AYZ: A⇔Z, A - 2 = Y
FDU: F⇔U, F - 2 = D
HDS: H⇔ S H - 2 = F
'HDS' does not follow the same pattern.