QUESTION $18$

Use Karnaugh mapping, the simplifed version of the expression $AC[B^{\text{'}}+B(B+C^{\text{'}})]$ is

$x=AB$

$x=A{C}^{\text{'}}$

$x=AC$

$x=A+D$

QUESTION $19$

The simplest form of the boolean expression $x=(A+B)(A+C)$ is

$x=AA+AC+AB+BC$

$x=A+BC$

$x=A+AC+AB+BC$

$x=A(1+C+B)+BC$

QUESTION $20$

A literal is a variable or its complement

True

False