Răspuns:
Explicație pas cu pas:
17 ∈ {13, 15, 17, 19} adevarat
________
{2, 3, 6, 8} \ {5, 2, 1, 3} = {6,8} adevarat
________
{2, 5, 6, 7} ∩ {4, 1, 6, 8, 10] = {6}
6 ∈ {6} adevarat
________
{13, 14, 15, ..., 21} ∩ {2, 4, 6, 8, ..., 32] = {14, 16, 18, 20}
17 ∈ {14, 16, 18, 20} fals
