Q: What is the result of 61 minus 21? A: 
Q: What is the result of 55 minus 18? A: 
Q: What is the result of 67 minus 21? A: 
Q: What is the result of 61 minus 20? A: 
Q: What is the result of 71 minus 21? A: 
Q: What is the result of 61 minus 51? A: 
Q: What is the result of 60 minus 21? A: 
Q: What is the result of 61 minus 21? A: 