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

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Replace the question mark with the correct number below.

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?