ISEE Upper Level Quantitative Reasoning Quiz
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DATA ANALYSIS AND PROBABILITY
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A game show has three doors. Behind one door is a prize, behind the other two are empty. A contestant chooses a door. The host, who knows what's behind each door, opens a different door that is empty. The contestant can then switch to the remaining unopened door or stay with their original choice.
If the contestant uses the switching strategy, what is the probability of winning the prize?
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