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

What goes up but never comes down?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

10+10 and 11+11 can give you the same answer.

Explain how?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

Through your logical capabilities, can you make 7 an even?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211