Each of the two inputs $A$ and $B$ can assume values either $0$ or $1$. Then which of the following will be equal to $\bar{A} \cdot \bar{B}$?

In the following circuit, what are the values of $P$ and $Q$?

In the given circuit, the binary inputs at $A$ and $B$ are both $1$ in one case and both $0$ in the next case. The respective outputs at $Y$ in these two cases will be

In the circuit,the logical value of $A = 1$ or $B = 1$ when the potential at $A$ or $B$ is $5 \, V$,and the logical value of $A = 0$ or $B = 0$ when the potential at $A$ or $B$ is $0 \, V$. The truth table of the given circuit will be:

The logic circuit is shown below:

$A$	$B$	$Y$
$0$	$0$	$1$
$0$	$1$	$0$
$1$	$0$	$0$
$1$	$1$	$1$

To obtain the given truth table,which logic gate should be placed at $G$?

Draw the output signals $C_1$ and $C_2$ for the given combination of gates as shown in the figure.