Re: A Microsoft Interview Question (aka basic Bayes\' Theorem)
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Wouldn't you want to spin it again, because once he hands the gun to you, you would have a 2/5 chance of shooting youself, because the chamber before was empty. If you spun it again, you would have a 2/6 chance of shooting yourself.
Is this correct?
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Not quite, but you're close. Like the Monty Hall problem, this is an exercise in conditional probability. Think about this: Your friend just pulled the trigger and hit an empty. How many total states could the revolver have been in when your friend shot, and how many of these cause you to blow your own brains out?
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