Question

The universal set is the set of rational numbers. S is the set of integers.

Which represents Sc?

{x|x is a real number}
{x|x is a rational number}
{x|x is a rational positive number}
{x|x is a rational non-integer}

Answer 1

{x | x is a rational non-integer}

Reason: The universe is all rationals, S is integers, so S^c = all rational numbers that are not integers.