What number when divided in half becomes zero?

Can you name four days which start with the letter 'T'?

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

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

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?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

What do you call a fish without an eye?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

If it took eight men ten hours to build a wall, how long would it take four men to build it?