In each of the following questions, select the related letters/words/numbers from the given alternatives. 

Select the option that is related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number.

144 : 225 :: 169 : 256 :: ? : 361

In the following question, select the related words/letters /numbers from the given alternatives.
Joly : Delight : : Gloomy : ?

Select the option that is related to the third term in the same way as the second term is related to the first term.
Bank : Money : : Warehouse : ?

Direction: In the following question, select the related letters from the given alternatives.
Cow : Calf :: Hen : ?

Which number come at the Question mark(?) at the given equation.
64 : 16 : : ?

In the following question, Letter pair is given and one Letter group is missing from one pair. Choose the correct option.
BDF: GIK:: MOQ:? 

5 : 30 : : 7: ?