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?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

What 5-letter word typed in all capital letters can be read the same upside down?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What work can one never finish?

The Little ant seems to be always confused. Do you know why?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

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?