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

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Can you find out the missing number in the grid?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

It belongs to you, but other people use it more than you do. What is it?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

Find the value of "?" in the ball picture Riddle below:

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

If you say my name, I will no longer exist. What am I?