Q: What is the result of 81 minus 42? A: 
Q: What is the result of 89 minus 22? A: 
Q: What is the result of 86 minus 42? A: 
Q: What is the result of 81 minus 40? A: 
Q: What is the result of 71 minus 42? A: 
Q: What is the result of 81 minus 42? A: 
Q: What is the result of 89 minus 40? A: 
Q: What is the result of 81 minus 42? A: 