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

What country can make you shiver?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

What does a man do only once in his lifetime, but women do once a year after they are 29?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Imagine you are in a room with no windows or doors. How will you get out?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Which Travels Faster? Solve below famous picture riddle:

How many words can a pen with half refill write?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?