IPMAT Rohtak 2019 (LR) PYQs

In a certain code, 15789 is written as XTZAL and 2346 is written as NPSU. How is 23549 written in that code?

In a certain code IMTITJU is written as TMIIUJT. How is TEMREMP written in that code?

In a code language, Elephant is told as Jackal, Jackal is told as Monkey, Monkey is told as Dog, Dog is told as Lion, Lion is told as Goat, Goat is told as Mouse, then who will be the king of jungle?