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Aflati A si B daca:
a)A U B={1,2,...9),A\B={1,3,4},B\A={5,6,7}


Răspuns :

A={1,2,3,4,8,9}
B={2,5,6,7,8,9}
A={1,2,3,4,8,9}
B={2,5,6,7,8,9}

Sper ca te-am ajutat .