The difference between 26 and 15 is: 
The difference between 74 and 17 is: 
The difference between 28 and 15 is: 
The difference between 26 and 15 is: 
The difference between 66 and 15 is: 
The difference between 26 and 15 is: 
The difference between 30 and 19 is: 
The difference between 26 and 15 is: 