Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Mathematics Sets Operations on Sets

The union of the two sets A = {1, 2, 7, 9, 12} and B = {x : x2 - 10x + 16 = 0} is:

1
{}
2
{2, 7}
3
{1, 2, 7, 8, 9, 12}
4
{1, 8, 9, 12}
5
Not Attempted
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