Question $39(3$ points$)$

Write the following set in set$-$builder notation:

$\{1,2,3,4,5,6\}$

A

Question $40(2$ points$)$

If the universal set $U=\{1,2,3,4,5,6,7,8\}$ has three subsets: $A=\{4,5,6,7\}$ and

$B=\{1,3,5\}$ and $C=\{1,8\}.$ Find:

$AA$

A$)$