Question

If $U=\{x|xϵN,x<5\},A=\{x|xϵN,x\le 2\}$ then $A^{\prime }=$ __________.

• A. $\{1,2\}$
• B. $\{1,2,3,4,5\}$
• C. $\{3,4\}$
• D. $\{3,4,5\}$

Answer 1

The correct option is C $\{3,4\}$

$\cup =\{x|x\in N,x<5\}$

$A=\left|x|x\in N,x⩽2\right|$

then $A^{\prime }=\{3,4\}$

part $C$ is correct answer.