UPSKILL MATH PLUS
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Learn more1. If \(n(A) = 25\), \(n(B) = 40\), \(n(A \cup B) = 50\) and \(n(B') = 25\), find \(n(A \cap B)\) and \(n(U)\).
\(n(A \cap B)\) \(=\)
\(n(U)\) \(=\)
2. If \(n(A) = 300\), \(n(A \cup B) = 500\), \(n(A \cap B) = 50\) and \(n(B') = 350\), \(n(B)\) and \(n(U)\).
\(n(B)\) \(=\)
\(n(U)\) \(=\)
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