The Monty Hall Problem is based on the game show called Let's Make a Deal where a contestant is asked to choose from three doors to win a prize. Upon choosing a door the contestant is then shown what's behind one of the two remaining doors. The contestant is given the choice or changing their original choice and picking the last door.
The dilemma involves whether to accept the third door or to stay with the first choice made. Some assume that the second door shown will always be the non-prize and thus the contestant should always accept the third door.

### Related categories 2

### Sites 8

The Straight Dope: On "Let's Make a Deal"

Thorough discussion of the problem, with solutions explained.

The Infamous Monty Hall Problem

Short introduction for beginners.

Marilyn vos Savant: The Game Show Problem

The problem and a discussion on the validity of the solution.

Mathnet : The Car and the Goats

Introduction to the problem and the controversy. As well as a simulator. Includes a link to the next page which explains the maths behind the problem.

Monty Hall

Includes a introduction to the problem, a hint to the solution and the solution. The author attempts to "provide a reasonable and clear explanation of the answer".

Monty Hall Problem

Wikipedia article on this problem and its solution.

Monty Hall Strikes Again

Dr Math answers a reader question and explains why the puzzle works the way it does.

A New Approach to the Monty Hall Problem

Introduces the problem and tries to look at the problem in a new light.

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