If $GIVE$ is coded as $5137$ and $BAT$ is coded as $924$,how is $GATE$ coded?

In a certain code language,'$134$' means 'good and tasty','$478$' means 'see good pictures' and '$729$' means 'pictures are faint'. Which of the following digits stands for 'see'?

If $A$ is coded as $1$,$B$ is coded as $2$,and so on,how is $HIGH$ coded in that code?

If $MISTAKE$ is coded as $9765412$ and $NAKED$ is coded as $84123,$ how is $DISTANT$ coded?

The number $879341$ is to be codified in the following code:

Digit	$7$	$2$	$1$	$5$	$3$	$9$	$8$	$6$	$4$
Letter	$W$	$L$	$M$	$S$	$I$	$N$	$D$	$J$	$B$

The word $EXPAND$ has been written in four different codes by applying four different rules. Identify the rule applied to the word $MICROWAVE$ to obtain the code $FXDATXJQV$ from the given alternatives.
$EXPAND$ $(a)$ $FYQBOE$ $(b)$ $EPDTCR$ $(c)$ $GYRBPE$ $(d)$ $CWNZLC$
$MICROWAVE$ : $FXDATXJQV$