Question

Si A = {1; 5; 7; 8; 9} , B = {1; 5; 8; 9}, C = {1; 8}, D = {1; 9; 7}, calcula (ASi A = {1; 5; 7; 8; 9} , B = {1; 5; 8; 9}, C = {1; 8}, D = {1; 9; 7}, calcula (A ∆ C) – (B ∆ D). ∆ C) – (B ∆ D).

Answer 1

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