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Fie multimile A={1,2,3,4,5,6,7}, B={5,6,7,8,9} si C={1,2,3,7,12}. Aflati:a) A∨B;   b) A∨C;   c) B∨C;   d) A∧B;   e) A∧C;   f) B∧C;   g) A∨B∨C;   h) A∧B∧C;   i) A/B;j) B/C;   k) A/C;   l) A∨(B∧C).

Răspuns :

CheMara
a)1,2,3,4,5,6,7,8,9
b)1,2,3,4,5,6,7,12
c)1,2,3,5,6,7,8,9,12
d),5,6,7
e)1,2,,7
f)7
g)1,2,3,4,5,6,7,8,9,12
h)7,
i)1,2,3,4,
k)4,5,6
l)1,2,3,4,5,6,7,

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