How many calories are gained by drinking a glass of water?

Identify the diagram that best represents the relationship among the classes given below.
Females, Mothers and Sisters.

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

His behaviour embarrasses me.

If a wire is bent into the shape of a square, the area of the square is 81 sq. cm. When the wire is bent into a semicircular shape, the area of the semicircle is 

Which of the following are the cheapest memory devices in terms of cost/bit? 

इनमें से किस विकल्प में सही विलोम-युग्म है? 

A boat goes 75 km upstream in 3 hours and 60 km downstream in 1.5 hours. Then the speed of the boat in still water is: 

For what purpose was the famous computer named Pacman made?