583 : 483 : : 293 : ?

What is the next term in the given series?
22A, 42E, 62I, ?

In the following question, select the missing number from the given series.

Directions: In this question, four words have been given, out of which three are alike in some manner and the for one is different. Choose out the odd one. 

Sunil is the son of the Kesav. Simran is Kesav's sister, has a son Maruti and daughter Sita. Prem is the maternal uncle of Maruti. How is Sunil related to Maruti? 

If 25 A 9 B 3=75 and 15 A 6 B 2=45, then 16 A 8 B 2=?

In the following question, select the related number from the given alternatives.
23 : 72 :: 38 :?