Four of the following five are alike in a certain way and hence form a group. Which is the one that does not belong to that group?
1. MNOP : NMOP
2. ABCD : BACD
3. FGHI : GFHI
4. STUV : TSUV
5. WXYZ : XYWZ
Show answer & explanation
Correct answer: C
Explanation
We look at how the first two letters are rearranged:
MNOP → NMOP (M and N swapped)
ABCD → BACD (A and B swapped)
FGHI → GFHI (F and G swapped)
STUV → TSUV (S and T swapped)
WXYZ → XYWZ (W and X are NOT swapped)
Only WXYZ : XYWZ does not follow “swap first two letters” pattern.
Hence the correct answer is option 3.