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

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

What can you hold in your right hand, but never in your left hand?

How can you tell a raw egg from a hard-boiled egg?

How many words can a pen with half refill write?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Why are all black people so quick ?

Why is a river so rich ?

Which alphabet is a part of our body?