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

What number do you get when you multiply all of the numbers on a telephone's number pad?

What does below pictogram mean?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

What always comes into a house through the keyhole?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

81 x 9 = 801. What must you do to make the this equation true?