determinati nr nat nenule a si b ,cu a mai mic sau egal decat b,pt care au loc relatiile.....(a,b)=18,[a,b]=216; (a,b)=15,[a,b]=360; [a,b]=240,a*b=2880; (a,b)*[a,b]=72; [a,b]+(a,b)=20; (a,b)=12,a+b+[a,b]=2892......clasa a VIa​