5)a)Oltul,Argeşul ,Ialomiţa
b)campie, deal, munte, podis
6)10,11,100,101,110,111
5.
a) A = { Suceava, Mures, Olt }
b) B = { munte, podis, deal, campie }
6.
A = { 10, 11, 100, 101, 110, 111 }
