The difference between 52 and 49 is: 
The difference between 66 and 42 is: 
The difference between 59 and 49 is: 
The difference between 52 and 41 is: 
The difference between 72 and 49 is: 
The difference between 52 and 29 is: 
The difference between 55 and 42 is: 
The difference between 52 and 49 is: 