The difference between 97 and 91 is: 
The difference between 72 and 21 is: 
The difference between 98 and 91 is: 
The difference between 97 and 92 is: 
The difference between 97 and 91 is: 
The difference between 97 and 71 is: 
The difference between 102 and 96 is: 
The difference between 97 and 91 is: 