Why are all black people so quick ?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

What building has the most stories?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Why Aeroplane windows are round?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What runs around the whole yard without moving?