What has no start, end, or centre?

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

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

I purchased an awesome ice cream cone having 5 different flavour scoops.
Five flavours are pistachio, mint-chip, strawberry, marshmallow, and raspberry

I will give u some clues so that you can figure out the order of flavours from bottom to top.
1. The bottom flavour of the cone has 10 letters.
2. The marshmallow scoop is between the pistachio and the mint-chip scoop.
3. marshmallow is the raspberry scoop but below the mint-chip scoop.

So can you figure out the flavour of ice cream in order from bottom to top?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Which alphabet is a part of our body?

Can you move 2 matchsticks to form four equal sized squares.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?