The difference between 67 and 33 is: 
The difference between 37 and 17 is: 
The difference between 66 and 33 is: 
The difference between 67 and 34 is: 
The difference between 57 and 33 is: 
The difference between 67 and 53 is: 
The difference between 73 and 39 is: 
The difference between 67 and 33 is: 