Monty Hall Problem: this famous problem is based on the game show of the same name, basically he would give you a chance to win a good prize behind one of three doors, you would select one, and then Monty would open another door and show you what was behind it, he wouldn’t open the one with the prize behind, so that left you with the door you selected and the other door, now is it to your advantage to switch your choice of door? Some people find it hard to get their head around the fact that yes you stand a much better chance of winning if you switch… follow the links on the page to find out why, or check out a Simulation

and background explanation. Also Bob Farmer wrote a couple of articles on this in recent GENII magazines which are worth the read, and this problem also appears in the currently best selling book The Curious Incident of the Dog in the Night Time.