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

why number 8549176320 is one of a kind?

Buy me, smell me or deliver me, I do not change.

Who am I?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

The more you take me, the more you leave me behind.
Who Am I?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?