The difference between 93 and 81 is: 
The difference between 97 and 63 is: 
The difference between 92 and 81 is: 
The difference between 93 and 81 is: 
The difference between 93 and 81 is: 
The difference between 93 and 31 is: 
The difference between 101 and 89 is: 
The difference between 93 and 81 is: 