Which logic gate is represented by the following truth table?

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

In the logic circuit given below, if $X=1$ and $Y=1$, then the values of $P, Q$ and $R$ are:

The truth table for the following logic circuit is

In the circuit below,$A$ and $B$ represent two inputs and $C$ represents the output. The circuit represents:

$A$ 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:

The figure shows $2$ $NAND$ gates followed by a $NOR$ gate. The system is equivalent to one gate $G$ with inputs $X, Y, Z$ and output $R$. What is $G$?