Question

The inputs to the digital circuits are shown
below. The output $Y$ is

• A. $A+B+\overline{C}$
• B. $\overline{A}+\overline{B}+\overline{C}$
• C. $\overline{A}+\overline{B}+C$
• D. $(A+B)\overline{C}$

Answer 1

The correct option is B $\overline{A}+\overline{B}+\overline{C}$

From the given condition we can write
$(\overline{A}\overline{B}+\overline{C})=\overline{A}+\overline{B}+\overline{C}$
Hence, option $\left(C\right)$ is correct.