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

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

Asked by Neha on 12 May 2024


When 99 is considered higher than 100?

Asked by Neha on 26 Feb 2021

There are five men, let's say Tarun Harish Lavesh, Manoj, and Manish. All of them have a dot mark on their forehead. They can't see the dots on their forehead but can see the ones on others. The owner of WHITE Dot is an honest person and will never lie, while the owner of BLACK Dot always tells the lie.

This is the statement from Tarun Harish Lavesh and Manish:
Tarun: 'I see 3 whites and 1 black'
Harish: 'I see 4 black'
Lavesh: 'I see 3 black and 1 white'
Manish: 'I see 4 white'

What colour is the dot on each of Tarun Harish Lavesh, Manoj, and Manish's forehead?

Asked by Neha on 09 May 2026


Which flower has two lips?

Asked by Neha on 24 Apr 2024

What is the next number?

77, 49, 36, 18 ?

Asked by Neha on 05 Jun 2026

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Asked by Neha on 03 Aug 2024


Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Asked by Neha on 08 Mar 2023

Can you find the six hidden animals in the picture below?

Find The Hidden Animals

Asked by Neha on 21 Jun 2024

Which of the eight images will fill the missing image in the puzzle below?

Pure Logic for Ginious

Asked by Neha on 06 Jul 2026


Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

Asked by Neha on 12 May 2025

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Crossword puzzles

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