Adam Hrankowski, ADHD
Bio
I write and make videos about maths and fizzix.
See more stuff here: youtube.com/c/MathAdam
Stories (6/0)
That Pesky Blue-Eyed Islander Puzzle
You may already know the famous (infamous?) Blue-Eyed Islander Puzzle. Here’s my version. 99 perfect logicians are stranded on a remote island. As perfect logicians, each is able to immediately determine the logical outcome of any statement. These perfect logicians all have blue eyes. Each Islander is able to observe all the others. However, they are all unable to communicate with one another. Furthermore, each is (somehow) unable to observe his/her own eye colour. As a result of these circumstances, each logician knows the following to be true: At least 98 people here have blue eyes. Each day at noon, a flying saucer arrives. If any person knows his/her own eye colour, that person is transported to the flying saucer, in full view of everyone. Each Islander is aware of all of these conditions with one restriction: no Islander knows his or her own eye colour. Each day, the flying saucer comes and goes. No one leaves the island. One day, a voice from the flying saucer announces: One of you has blue eyes! The flying saucer then leaves. How many of the Islanders eventually leave the island, and when do they leave?
By Adam Hrankowski, ADHD2 years ago in Humans
- Top Story - November 2021
The Poisoned Wine Bottle PuzzleTop Story - November 2021
King Bob and his loyal subjects have been planning King Bob Day for years. Finally the day is upon us! The Royal Vintner has set aside 1,000 bottles of the finest aged wine in honour of the occasion.
By Adam Hrankowski, ADHD2 years ago in Fiction