$A$ logic circuit provides the output $Y$ as per the following truth table:

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

The expression for the output $Y$ is:

$A$ person applies a sine wave and a square wave to an $AND$ gate as shown in figures $(i)$ and $(ii)$. Assuming that both the voltages are applied in phase, the person observes the output at $E$ and $F$ on $(i)$ and $(ii)$, respectively. [Assume a minimum voltage of $5 \ V$ is equivalent to logic $1$].

In the following digital circuit,what will be the output at $Z$ when the inputs $(A, B)$ are $(1,0), (0,0), (1,1), (0,1)$?

Which of the following pairs are universal gates?

In the given circuit as shown,two input waveforms $A$ and $B$ are applied simultaneously. The resultant waveform $Y$ is:

The resultant gate and its Boolean expression for the given circuit is