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

The centre of the third figure is empty. What digit should fit inside?

Missing Digit Riddle

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The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

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In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
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2. Do you know what is in the middle of Valentine's?

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Find the next number in the series below.

6 18 270 72090 ?

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What is It?

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A Child was born in Lahore, Pakistan.

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Amazing Facts

Challenging

There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.