Given n(A∩B)=10,n(A∖B)=5,n(B∖A)=8n(A \cap B) = 10, n(A \setminus B) = 5, n(B \setminus A) = 8n(A∩B)=10,n(A∖B)=5,n(B∖A)=8, find n(A∪B)n(A \cup B)n(A∪B).
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