Monty Hall, Three Doors Help

How Do I Use This Activity?

This activity allows the user to simulate the standard Monty Hall Game. The user chooses a door, and then another door is opened to reveal a stinking pig. The player must then decide to stick with the original choice or change.

This Java applet requires a Java-capable browser. If you don't see the applet Java may not be functional in your browser or on your machine.

Controls and Output

  • Observe three closed doors at the beginning of each round of the game:

  • Click on a door you want to pick. The selection sign will appear on the door you picked. Here the door on the left is selected:

    Then one of the other two doors will open to reveal a pig.

  • Click on one of the remaining two doors to find out whether there is the grand prize or a pig behind it.
  • Click on the Let's do it again button to start a new game:

  • Observe the data for the games when you stayed with the original door:

    Then observe the data for the games when you switched:

  • Click on the Reset stats button to reset all the data to zeros:





Please direct questions and comments about this project to Interactivate@shodor.org
© Copyright 1997-2002 The Shodor Education Foundation, Inc.