If SYSTEM is written as RXRSDL. How can CORRECT be written in that code

From the given alternative words, select the word which cannot be formed using the letters of the given word:

PRONOUNCEMENT

A mother is five times older than her daughter. After 5 years, she would be 3 times older than her daughter. Find the mother's present age.

Options:

Rajiv is the brother of Arun. Sonia is the sister of Sunil. Arun is the son of Sonia. How is Rajiv related to Sunil

Which number will complete the series?

63, 72, 81, 90, ____, 108

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

H__JH__IJHHI__HH__JH