The difference between 91 and 64 is: 
The difference between 97 and 36 is: 
The difference between 95 and 64 is: 
The difference between 91 and 60 is: 
The difference between 91 and 64 is: 
The difference between 91 and 14 is: 
The difference between 97 and 60 is: 
The difference between 91 and 64 is: 