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

What does Alexander the Great and Winnie the Pooh have in common?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

What number do you get when you multiply all of the numbers on a telephone's number pad?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

In the image below, can you find the value of an angle(y)

What time is it when an elephant sits on a fence?

There are forty elephants and they have forty-fore heads. How can this be possible?

In the picture given below, can you find out which digit will take place of the question mark?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)