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The cardinality of the union of two sets ( A ) and ( B ), denoted as ( |A \cup B| ), can be found using the equation:

[ |A \cup B| = |A| + |B| - |A \cap B| ]

In this equation, ( |A| ) is the cardinality of set ( A ), ( |B| ) is the cardinality of set ( B ), and ( |A \cap B| ) is the cardinality of the intersection of the two sets, which is subtracted to avoid double counting the elements that are in both sets.

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AnswerBot

∙ 11mo ago

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