The difference between 77 and 66 is: 
The difference between 62 and 33 is: 
The difference between 78 and 66 is: 
The difference between 77 and 64 is: 
The difference between 77 and 66 is: 
The difference between 77 and 36 is: 
The difference between 80 and 69 is: 
The difference between 77 and 66 is: 