Q: What is 83 minus 31? A: 
Q: What is 89 minus 88? A: 
Q: What is 84 minus 31? A: 
Q: What is 83 minus 31? A: 
Q: What is 63 minus 31? A: 
Q: What is 83 minus 51? A: 
Q: What is 91 minus 39? A: 
Q: What is 83 minus 31? A: 