 07-04-2009, 07:48 PM | #1 |
| Marshmallow Knight ☆ Supermod Join Date: Jun 2000 Location: Southern Ontario Gender:  Posts: 23,268 Thanks: 568 Thanked 3,295 Times in 1,580 Posts |  Hat Trick (riddle)
A cute little logic riddle with coloured hats. Quote: | Originally Posted by http://www.futilitycloset.com/2009/06/25/hat-trick/ A group of men, all versed in logic, sits around a table. Fifteen of them are wearing red hats, the rest blue. Each can see the others' hats but not his own. On the table is a clock which strikes once each hour. The men are given the following instructions: 'You are not allowed to discuss the color of your hats. However, should any of you find that he is wearing a red hat, he should leave the table on the clock-strike immediately following his discovery.' Now it is assumed that no one is initially aware of the color of his own hat. Furthermore, since the men cannot see the color of their own hats, nor discuss it with their colleagues, nothing happens for a while. Then a guest arrives. She looks at the hats around the table, and says, clearly: 'At least one man here is wearing a red hat!' What happened and why? | |
 | |