The difference between 61 and 52 is: 
The difference between 25 and 17 is: 
The difference between 66 and 52 is: 
The difference between 61 and 50 is: 
The difference between 61 and 52 is: 
The difference between 61 and 52 is: 
The difference between 69 and 50 is: 
The difference between 61 and 52 is: 