Verified Answer :

dalendrk

{(2, 3), (1, 5), (2, 7)} - NOT because 2->3 and 2->7
{(11, 9), (11, 5), (9, 3)} - NOT because 11->9 and 11->5
{(3, 8), (0, 8), (3, -2)}

  • NOT because 3->8 and 3->-2

    {(-1, 5), (-2, 6), (-3, 7)} - YES

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