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Fie multimile A={1,2,3,4,5,6,}, B={5,6,7,8,9} si C= {1,2,3,7,12} . Aflati:

a) A reunit B;
b) A reunit C;
c)B reunit C;
d) A intersectat B
e) A intersectat C
f) B intersectat C
g) A reunit B reunit C
h) A reunit (B intersectat C)