Paradox Probability

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?




Similar Riddles

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

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I am sure no one can have two things for dinner. what are they?

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In a basket of apples,
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when counted in fives, there were four extra
when counted in sixes, there was five extra.

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If eleven plus two equals one, what does nine plus five equal?

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What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

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If you say my name, I will no longer exist. What am I?

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Can you count the number of squares in the given picture?

How Many Squares you Find

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You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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Amazing Facts

Word ladder puzzle

The word ladder puzzle was invented by Lewis Carroll, author of Alice’s Adventures in Wonderland.