1.Scrieți submulțimile mulțimilor
A={5,6,8}
B={a,b,c,d}

2.Calculați
a){1,2,3,5,8}intersectat{0,2,4,6,8}
b){1,2,3,4,5}
c){4,8,10}reunit{2,4,6,8}
d){3,4,9}reunit{5,6,7}reunit{1,2,3,5,7}

3.A sau F
5aparține{0,1,2}
{1,7,9}inclus{0,1,6,7,8}
3nu aparține{4,7,11}
4aparține{1,2,4}intersectat{5,6,2,1}
{12,13,14} intersectat {1,2,3,4}=vidă

4.A,B=?
a)AUB={m,n,a,b,c,d,x}
B\A={m,d}
AintersectatB={a,b,x}
b)AUB={0,1,2,3,4,5,6}
A\B={4,6}AintersectatB={1,3,5}
c)AUB={1,2,3,4,5,6,7,8}
A\B={2,4,5},B\A={1,8}

5.A={1,2,3} B={2,4,6}, C={3,5,7}
AUB,BUC,AUBUC, AintersectatB, AintersectatC, AintersectatBintersectatC,A\B,B\C,A\C, vidă intersectatB(A\B)U(A\C)
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