Ononot — Let A and B be finite sets. If n(A \cup B) = 2 \cdot n(A \ca

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Set Theoryhard

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Let $A$ and $B$ be finite sets. If $n(A \cup B) = 2 \cdot n(A \cap B)$ and $n(A) = 15$ , which of the following statements about $n(B)$ is true?