I shave every day, but my beard stays the same. What am I?

What building has the most stories?

Count the number of triangles in the given picture.

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Can you count the number of squares in the figure below?

Next Number in the Series,

5, 16, 49, 104, ?

Why do we preferably have round manhole covers and not square ones?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?