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Aflati A in reuniune cu B, A in intersectie cu B, A in diferenta cu B, B in diferenta cu A,daca:
a)A={-2,-5,3,7,9} , B={-5,3,7,9}
b)A={a,b,m,n} , B={b,c,d,m,n,t}

Dau coronita!


Răspuns :

a)AreunitB={-5,-2,3,7,9}
AintersectatB={-5,3,7,9}
AminusB={-2}
BminusA=semnul fi
b)AreunitB={a,b,c,d,m,n,t}
AintersectatB ={b,m,n}
AminusB ={a}
BminusA ={c,d,t}
Coronița?