Question

If $A=\{x:x=2x,x\in N\}$ and $B=\{x:x=2x-1,x\in N\}$, then $(A\cap B{)}^{\prime }$ is

• A. $A$
• B. $B$
• C. $\varphi$
• D. $U$

Answer 1

Answer: (D)

$A=\{2,4,6,8,\dots \}$
$B=\{1,3,5,7,\dots \}$
$A\cap B=\varphi$
$(A\cap B{)}^{\prime }=U$