The difference between 61 and 61 is: 
The difference between 79 and 59 is: 
The difference between 62 and 61 is: 
The difference between 61 and 60 is: 
The difference between 91 and 61 is: 
The difference between 61 and 11 is: 
The difference between 60 and 66 is: 
The difference between 61 and 61 is: 