Direction: In the following question, select the related word from the given alternatives. 

Train : Passenger :: Aeroplane  : ?

Direction: In the following question, select the related letters from the given alternatives.

Lion: Deer:: Mongoose:? 

Sorrow: Cry: Mirth: ?

CAT : 3120 :: MAT : ? 

The word 'cattle' is related to 'herd' in the same way as 'sportsman' refers to.

Light : Darkness:: Knowledge?

Direction: In the following question, select the related letters from the given alternatives.
Doctor : Hospital :: Chef : ? 

20 : 30 : : ? : 72