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A = {1,2,5,6}
B = { 2,3,7}
A U B =
A n B =
A - B =
B - A =


Răspuns :

A U B ={2}
A n B = {2}
A -B= {1,5,6}
B-A={3,7}
A∪B={1,2,3,5,6,7}
A∩B={2}
A-B={1,5,6}
B-A={3,7}