Q: What is the result of 66 minus 21? A: 
Q: What is the result of 67 minus 40? A: 
Q: What is the result of 68 minus 21? A: 
Q: What is the result of 66 minus 21? A: 
Q: What is the result of 86 minus 21? A: 
Q: What is the result of 66 minus 41? A: 
Q: What is the result of 71 minus 26? A: 
Q: What is the result of 66 minus 21? A: 