Similar idea to ToraToratoraIf 58 = 8-5-1=2 and 42= 2+4-1=5then:A = 52 = 2+5-1=6B = 42 =2+4-1 =5C = 49 =9-4-1=5D = 60 =0+6-1 =5E = 49=9-4-1=4F = 56 =6-5-1=0But the problem is there are other methods and solutions too. For example, the rule may be if the second digit is smaller, then find the difference and add3, or double the difference and add one. But I still...
Excellent work, thecorbyloon. I haven't checked it but I'm sure that's how to do it. I still think the question is a bit odd though as B could be 5 or 9, and why is 49 in twice?