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a). {x e N : 19 < x < 21 }. b). set theory. The cardinality of a set containing twenty objects. c). The number of years you spend in jail for assault with a deadly weapon. d). The age which is slightly less worthless than 19, and slightly more worthless than 18. The age at which you are considered to be well into fully legal adulthood, yet the government still deems it necessary to babysit certain aspects of your life. Despite the notoriety of turning a new decade, turning 20 doesn't mean a damn thing.
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