The difference between 47 and 17 is: 
The difference between 51 and 20 is: 
The difference between 49 and 17 is: 
The difference between 47 and 11 is: 
The difference between 37 and 17 is: 
The difference between 47 and 17 is: 
The difference between 43 and 15 is: 
The difference between 47 and 17 is: 