Question

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 reuniune B
b A reuniune C
c)B reuniune C
d)A intersectie B
e)A intersectie C
f)B intersectieC
g) A reuniune B reuniune C
h) A intersectie (B intersectie C
i)A \ B
J) B\C
k) A\C
l) A reuniune (B intersectie C )

Answer 1

a)AuB={1,2,3,4,5,6,7,8,9}
b)AuC={1,2,3,4,5,6,7,12}
c)BuC={1,2,3,7,8,9,12}
d)AnB={5,6,7}
e)AnC={1,2,3,7}
f)BnC={7}
g)AuBuC={1,2,3,4,5,6,7,8,12}
h)AnBnC={7}
i)A\B={1,2,3,4}
j)B\C={5,6,8,9}
k)A\C={4,5,6}
l) Au(BnC)={1,2,3,4,5,6,7}