I don't see any way to do this other than trial and error. Tedious, yes, but so is writing to yahoo answers. Get out some scratch paper and start writing, look for a pattern.
2+0 = 2 2+1 = 3 2+2 = 4 .... there's a pattern emerging here! 2+ 7 = 9 2+8 = 10 ... bingo make sure there's no other possible answers you may have missed: 3+0 = 3 ... 3+2 = 5.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.