Question 1046433:  List the elements in a set 
(X | x is a whole number that is not a natural number)  
 Answer by Fombitz(32388)      (Show Source): 
You can  put this solution on YOUR website! Whole numbers are integers. 
Natural numbers are positive integers. 
The only issue is whether zero is a natural number or not, that is not clear.  
So whole numbers that are not natural numbers are either negative integers or they are negative integers plus zero. 
So, 
{-1,-2,-3,...} 
or 
{0,-1,-2,-3,...} 
  | 
 
  
 
 |   
 
 |