In the name of ALLAH, the most beneficient, the most merciful

Discrete Mathematics (MTH202)

Question (select most suitable option)

  Let X = {1, 2, 3}, then 2-combinations of the 3 elements of the set X are _________?
{1, 2}, {1, 3} and {2, 3}
{1, 2}, {2, 1}, {1, 3}, {3, 1}, {2, 3}, and {3, 2}
{1, 2}, {2, 1}, {1, 3} and {2, 3}
{1, 2}, {2, 1},{1, 3} and {3, 1}