Question

If $U=1,2,3,4,5,6,7,A=1,2,3,4,5$, and $B=1,3,5,7$, then $A^{\prime }–B^{\prime }$ is equal to:

• A. $\{3,4,6\}$
• B. $\{4,6\}$
• C. $\left\{7\right\}$
• D. $\{1,3,5\}$

Answer 1

The correct option is C $\left\{7\right\}$

$A^{\prime }=\{6,7\}$
and $B^{\prime }=\{2,4,6\}$
$A^{\prime }-B^{\prime }=\left\{7\right\}$