Union of Two Sets

Union of Two Sets

Secondary 4

UNION

\(A \cup B\), \(A\) or \(B\), elements which are in \(A\), in \(B\), or in both.

Consider the set \(A = \{4, 5, 6, 7, 8\}\) and \(B = \{7, 8, 9\}\), all the elements in \(A\) or in \(B\) together is \(\{4, 5, 6, 7, 8, 9\}\).

\(\therefore A \cup B = \{4, 5, 6, 7, 8, 9\}\)

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Answer:\(A\cup B=\{4,5,6,7,8,9\}\)

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