Question

For the logic circuit shown in Figure, the output is equal to

Answer 1

$Y=\overline{A}+\overline{AB}+\overline{BC}+\overline{C}$
$Y=\overline{A}+(\overline{A}+\overline{B})+(\overline{B}+\overline{C})+\overline{C}$
$Y=\overline{A}+\overline{B}+\overline{C}$