Answer
$ \bar C =\{0,2,5,7,8,9\}$.
Work Step by Step
The given sets are
$C=\{1,3,4,6\}$ and $U=\{0,1,2,3,4,5,6,7,8,9\}$
The symbol $ \bar C$ means the set containing the elements of the union set not in set $C$.
Hence, the answer is $ \bar C =\{0,2,5,7,8,9\}$.
