What do you think with the below Picture ?

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

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

What does below Rebus say?

XLR8

Replace the question mark with the correct number in the below-given picture?