Are we thowing logic out of the equation? I will say the answer is 10 because 7+3=10... Unless it's moth from a different universe.... The 410 is acceptable... But elementary math dictates 7+3=10. The problems prior wrong... If you where to say "if 5+3=28.... Then 7+3=??" The "if" would make it make sense. Without the "if" then we are working on an assumption that these false equations at true. But the answers to the equations are of course false. So 7+3=10.
Whoa!!! So many comments! Now I wonder what percentage of those who commented read the first comment and wrote his/her own comment like they solved it themselves........
7 - 3 = 4
7 + 3 = 10
Still, this makes no sense mathematically,.