You probably know the kind of puzzle where a trader has a number of gold coins, one of which is fake and has a different weight. His only tool is a balance with two scales, and the challenge to find out which of the x coins is fake in the smallest possible number of weighings.
I am not sure who first published this puzzle, and it has spread all over the web.
Sultan Ibrahim the 512th received all his 100 gouverneurs for the wedding of his favourite son. Every one of them brought a bottle of wine for the celebrations. His wife however found an anonymous note that one of the bottles had been poisoned. Alas her information did not tel her which gouverneur or which bottle. It did state that the poison was untraceable, and that the victim would die after exactly 24 hours.
The Sultan had 10 prisoners How did he use the 10 prisoners to start the celebrations of his sons wedding the next day?
You can find the solution here..
justpuzzles 