The difference between 61 and 25 is: 
The difference between 93 and 74 is: 
The difference between 67 and 25 is: 
The difference between 61 and 20 is: 
The difference between 51 and 25 is: 
The difference between 61 and 15 is: 
The difference between 67 and 21 is: 
The difference between 61 and 25 is: 