By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

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?

I look at you, you look at me, I raise my right, you raise your left. What am I?

John was piloting a plane behind a car but was never able to overtake it. Why?

What does this rebus means ?

PROG WORKRESS

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

By what process could you make a 'Tea-Table' into food?

I have no life, but I can die. What am I?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?