To get the truth table shown from the following logic circuit,the logic gate $G$ should be

$A$ 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 $1$].

$A$ combination of logic gates is as shown in the figure. $P$,$Q$,$R$,and $S$ are the inputs and $X$,$Y$,and $Z$ are outputs. When inputs $P$ and $R$ are 'low' $(0)$ and $Q$ and $S$ are 'high' $(1)$,the outputs $X$,$Y$,and $Z$ are respectively:

Six logic gates are connected as shown in the figure. The values of $y_1, y_2$ and $y_3$ respectively are

The figure shows a combination of two $NOT$ gates and a $NOR$ gate. The combination is equivalent to a

The output of the following logic circuit is: