In a certain code,$15789$ is written as $AXBTC$ and $2346$ is written as $MPDU$. How is $23549$ written in that code?

The word $EXPAND$ has been encoded using four different rules,resulting in four alternatives. Identify the rule applied to the word $MUSHROOM$ from the given options.
$EXPAND$ $(a)$ $FYQBOE$ $(b)$ $EPDTCR$ $(c)$ $GYRBPE$ $(d)$ $CWNZLC$
$MUSHROOM$ = ?

If 'ski rps tri' stands for 'nice Sunday morning','teh sti rps' stands for 'every Tuesday morning' and 'ski ptr qlm' stands for 'nice market place',what would 'Sunday' stand for?

If $QOSCFLBJO$ is the code for $PORCELAIN$,which word is coded as $BKMOUSPP$?

If $ROSE$ is coded as $6821$,$CHAIR$ is coded as $73456$ and $PREACH$ is coded as $961473$,what will be the code for $SEARCH$?

In a certain language,the numbers are coded as follows:

$4$	$3$	$9$	$2$	$1$	$6$	$7$	$8$	$5$	$2$	$0$
$A$	$W$	$P$	$Q$	$R$	$B$	$E$	$S$	$G$	$J$	$M$

How is $91352$ coded in that code?