Three doors, a prize behind only one door (say, a new car). Other two doors are each hiding a goat.

 

Contestant has to pick a door – and hope that she wins the car.  At just this stage, the chance of her winning the car is 1/3 – that part if simple.

Now, add a twist.

After the contestant has picked her door (but not opened it), the game host (Monty Hall), OPENS another door – to reveal a goat. He ALWAYS reveals a goat when he opens his door.

Now, he re-asks the contestant – Would you like to stay with your original door – or change to pick the other unopened door. 

You may think , it doesn’t matter what the contestant picks at this point. But you would be wrong.

The contestant is ALWAYS better off switching her answer!!

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

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Anuj Varma – who has written posts on Anuj Varma, Hands-On Technology Architect, Clean Air Activist.

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