If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What number when divided in half becomes zero?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?