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A hairy pot. At a certain famous school of witchcraft and wizardry, drinking a certain potion from a fur-covered pot will cause instant death (and, even worse, expulsion from the school) 7% of the time. What is the loss of life expectancy associated with taking a swig from the old hairy “potter” for a 12-year-old student who would otherwise expect to live to the age of 78?
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