Natural numbers are intergers that are greater than zero. such as 1,2,3,4,5 etc.
[tex]\begin{gathered} \N\text{ = }\left\lbrace \text{interger }>0\}\right? \\ \N\text{ = }\left\lbrace \text{1,2,3,4,}..\}\right? \end{gathered}[/tex]For the number given which is -7,
-7 is an interger but it is not a natural number because it is less than zero.
[tex]-7\text{ }<0[/tex]Therefore, -7 is not a Natural number
