1. {2,3}; {4,5}; {1,2,3,4}; {2,3,0}; {0,1 3 5}
2. multime, carte, matematica, calculator
{m,u,l,t,i,e}; {c,a,r,t,e}; {m,a,t,e,i,c}; {c,a,l,u,t,o,r}
3. Multimea cifrelor pare: {0,2,4,6,8}
Multimea cifrelor impare: {1,3,5,7,9}
4.a) x∈A
b) y∉B
c) C⊃1
d) card.D=5
