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

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Guess the hidden movie name?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

Which is faster, Heat or Cold ? Explain.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Find out the missing number in the picture attached:

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?