Question

The correct interval representation for the set $A=\{x:-4<x\le 4\}$ is given by

• A. $(-4,4)$
• B. $[-4,4)$
• C. $(-4,4]$
• D. $[-4,4]$

Answer 1

The correct option is C $(-4,4]$

The semi-closed bracket $(x,y]$ is used when left extreme value i.e $x$ is not included and right extreme value $y$ is included in the set.
So, the correct option is $(-4,4]$