A={1,2,3,4,5,6,7,8,}
B={0,1,2,3,4,5,6,7,8,9}
C={1,2,3}
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a) AUB={0,1,2,3,4,5,6,7,8,9}
b) AUC={1,2,3}
c) BUC={0,1,2,3}
d) A(intersectat cu)B={1,2,3,4,5,6,7,8}
e )A(intersectat cu)C={1,2,3}
f) B(intersectat cu)C={1,2,3}
g) ={1,2,3}
h) ={1,2,3,4,5,6,7,8}
