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Set Theoryeasy
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Given sets A={a,b,c}A = \{a, b, c\}A={a,b,c} and B={c,d,e}B = \{c, d, e\}B={c,d,e}, what is the cardinality of the union ∣A∪B∣|A \cup B|∣A∪B∣?