Question: Three sets A, B and C have the following properties: n(A) = 63, n(B) = 91, n(C) = 44,n(A B) = 25, n(A C) =

Three sets A, B and C have the following properties: n(A) = 63, n(B) = 91, n(C) = 44,n(A B) = 25, n(A C) = 23, n(C B) = 21.Also, n(A B C) = 139. What is

n(A B C)?

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