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

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

Asked by Neha on 04 May 2024


A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

Asked by Neha on 04 May 2021

What has hands, but can’t clap?

Asked by Neha on 21 Feb 2022


What Deficiency does the below rebus represent?

VIT_MIN

Asked by Neha on 09 Jun 2024

What can you hold in your right hand, but never in your left hand?

Asked by Neha on 13 Jul 2025

What number should come in place of the question mark below?

Logical Number in Center

Asked by Neha on 27 Aug 2024


There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Hourglass Time Puzzle

Asked by Neha on 30 Mar 2021

What has no start, end, or centre?

Asked by Neha on 02 Sep 2023

How many triangles can you count in the figure given?

How Many Triangles Puzzle

Asked by Neha on 06 Dec 2025


Can you find the dog hidden in a group of pandas?

Dog amongst Pandas

Asked by Neha on 16 Feb 2025

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