Discrete Math Quiz
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SETS, RELATIONS, AND FUNCTIONS
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Let U={1,2,3,...,20}U = \{1, 2, 3, ..., 20\} and consider sets M={x∈U:x is a multiple of 3}M = \{x \in U : x \text{ is a multiple of } 3\} and N={x∈U:x is a multiple of 4}N = \{x \in U : x \text{ is a multiple of } 4\}. If T=Mc∪NcT = M^c \cup N^c, which element is definitely NOT in TT?
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