Back in the day, there was a wizarding game show. (Okay, maybe minus the wizards.) In this show, the contestant was presented with three doors, and asked to choose a door. If the contestant was lucky, behind that door would be a shiny new Firebolt. If they were unlucky, the door would only reveal a slimy little flobberworm.
First our host Monty would ask the contestant to pick a door. Then, he would reveal a flobberworm from behind a door that the contestant didn't pick.
The question is: should the contestant switch doors, in order to win that shiny firebolt?
The answer should become more clear to you, the more doors that you start with!
This program is basically this demo, only with more doors.
Want to learn more about the Monty Hall problem? Check out my presentation here.