# Math Help - real analysis

1. ## real analysis

what is the supremum of a set A.......where set A={x:x belongs to (5,8)} ??

2. Originally Posted by mchild
what is the supremum of a set A.......where set A={x:x belongs to (5,8)} ??
What is the smallest number which greater that or equal to every number in $(5,8)~?$