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

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you find a five letter word that is left with only two letters if one is removed?

What number when divided in half becomes zero?

What two things can you never eat for breakfast?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Which word does the below Plexor means ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?