Observe the pattern in the first three groups:
Z1# : Y2@ : X3<br></p><pdata−pxy="true"style="color:rgb(0,0,0);margin−top:2px;margin−bottom:2px;">Lettersdecrease:<br>Z \to Y \to X<br></p><pdata−pxy="true"style="color:rgb(0,0,0);margin−top:2px;margin−bottom:2px;">Numbersincrease:<br>1 \to 2 \to 3
Symbols follow sequence:
#,\ @,\
W4% : V5^ : U6&
Letters decrease:
W→V→U
Numbers increase:
4→5→6
T7* : S8( : R9)
Letters decrease:
T→S→R
Numbers increase:
7→8→9
Q10_ : P9@ : O8
Here the numbers decrease:
10→9→8
So this group does not follow the same pattern.
Therefore, the odd group is:
Q10_ : P9@ : O8