Saturday Puzzle #27 – Let’s Make A Deal!

Today’s puzzle is so much fun and so counter-intuitive (accomplished mathematicians often get this one wrong), that I created a whole web site for it, hosted on Google App Engine.

You can find the website here: http://montyhallpuzzle.appspot.com. It includes a Javascript simulation, so if you don’t believe the answer you can try it for yourself. There’s also an “Auto-Run” capability which runs many trials very quickly. Enjoy!

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