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:: Let's make a Deal ::

You are participating in a TV game. You have reached a stage where you can select one box out of three knowing that only one contains a cash prize and the others contain nothing. The TV host knows which of the boxes contains the prize. Having made your choice, the host decides to reveal the content of one of the two boxes you haven't selected which he knows is empty. He then offers you the possibility to change your selection. Should you switch or stick to your choice? does it matter?

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