Question

Va rog ajutatima la aceste doua exercitii

Answer 1

5.  a) A∪B={1,2,3,4,5,6,7,8,9,10,11}
     b) A∩B={1,3,5,7,9,11}
     c) A-B={4,6} 
  A={1,3,4,5,6,7,9,11}
  B={1,2,3,5,7,8,9,10,11} 
6.  a) {a,b,c,d};{b,c,d,e};{a,c,d,e};{a,b,d,e};{a,b,c,e}
     b) {a,b};{d,e};{c;d}