Question: Let A = [a,b,c} B= (b,c) and C = (a,e.f) Then A C = B

Let A = [a,b,c} B= (b,c) and C = (a,e.f) Then A 

Let A = [a,b,c} B= (b,c) and C = (a,e.f) Then A C = B

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