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

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Make a sentence consisting of three words that have the whole alphabet.

Can you find the dog hidden in a group of pandas?

During which month do people sleep the least?

Count the number of lines in the image below ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?