25 : 81 : : 36 : ?

Direction: In the following question, select the related letters from the given alternatives.
Food : Hunger :: Sleep : ? 

A prisoner introduced a boy who came to visit him to the jailor as “Brothers and sisters I have none, he is my father’s son’s son”. Who is the boy?

In the given figure, how many metallic balls are also heavy?

What is value placed at Question mark?
F: 37 :: I : __?

In a row of girls, if Sujata is 10th from the left and Namrata is 9th from the right, interchange their positions, Sujata becomes 23rd from the left. How many girls are there in the row? 

In a certain code language, “he is game” is written as “@#*”, “good game play” is written as “$*&”and “play that hard” is written as “!$%”.How is “good” written in that code language?

Find out which of the diagrams given in the alternatives correctly represent the relation- ship stated in the question
Sharks, Whales, Turtles.