Mark as true or false If true give a brief justification If
 Mark as true or false. If \"true\" give a brief justification. If \"false\" give a counter example (drawing a picture is sufficient). EVERY nonempty set of real numbers has a supremum.
  Mark as true or false. If \"true\" give a brief justification. If \"false\" give a counter example (drawing a picture is sufficient). EVERY nonempty set of real numbers has a supremum.
Solution
True. It follows from order-completeness property of real numbers
It says that every non empty set of real numbers which is bounded above admits of a supremum

