The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

I am white when I am dirty, and black when I am clean. What am I?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Can you count the number of matches in the picture below ?