The salary of an employee increases every year in the month of July by $10\%$. If his salary in May $2000$ was $₹15,000$, his salary in October $2001$was?

In question, select the related word/letters/number from given alternatives:

Uttarakhand : Dehradun : : Mizoram : ?

In question, select the related letters from given alternatives:

YQXP : JBIA : : OVNU : ?

In question, select the related word/letters/number from given alternatives:

$1 : 1 :: 10 : ?$

In question, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series:

$CEG, JLN, QSU, \_\_\_\_\_?$

In question, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series:

$285, 253, 221, 189, \_\_\_\_\_?$