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

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Which is the rope you never skip with?

Decode the movie name from the below picture?

I taste better than I can smell. Who am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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 ?

I always drive my customer away.

Who am I?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?