All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Logic
The Logician's Birthday (Posted on 2004-11-17) Difficulty: 2 of 5

A logician invites 6 of his logician friends to help him celebrate his birthday. Each of the 6 guests is wearing a hat which is either red, yellow, or blue, and the logician host informs them all that there is at least 1 of each color. After they eat the cake, the host stands up and exclaims there is a special party prize for the first person who can deduce what color hat is on their head. The party guests all looked around the room at each other but no one claimed the prize immediately. Suddenly all 6 guests stood up and correctly identify what color hat was on their head.

What were the colors of their hats and how did they know?

See The Solution Submitted by Erik O.    
Rating: 3.5417 (24 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
the answer | Comment 25 of 75 |

there must be 2 yellow, 2 red, and 2 blues or else one of the people would instantly know what color hat they have...because of the line "The party guests looked around the room at each other but no one claimed the prize immediately." shows that no one definitely knew right away what color hat he/she was wearing so there could not be a combination of 1, 2, 3 because the person wearing the color on only one hat would know instantaneously what color he/she was wearing

my math students helped me out with this one...

 

; )

 

 

 

 

 


  Posted by mathteach on 2004-11-23 16:53:43
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (11)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information