During which month do people sleep the least?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

What can go up a chimney down, but can’t go down a chimney up?

When 99 is considered higher than 100?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

People put me on the table and cut me but do not eat me. What am I?

It belongs to you, but other people use it more than you do. What is it?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?