Calculati :
a) {2,3,5,6,7} ∧ {0, 4, 6,8}
b) {1 ,3,5,7,9} / {1,2,3,4,5,6,7,8,9}
c) {3,4,5} ∨ { 0,1,6}∨ {7,8,9,10}   
Va rog ajutatimaaa !!