Move four matchsticks to the below square to form three squares?

Find the missing number in the image below.

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

Can you make a fire with just a single stick?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?