Label the Box

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?




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If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

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If,

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At the local model boat club, four friends were talking about their boats.

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In a particular village, only two barbershops exist.

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A tourist visits a small town for his research. While in the town, he decides to get a haircut. Since the town is quite small, there are only two barbers in the town � one on the North Street and one on the South Street. The barbershop on the North Street is a mess and the barber has a weird and pathetic haircut. While the barbershop at the South Street is pretty tidy and the barber as well has an impressive haircut.

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.