‘Is it this? Is it that? Why does it even exist? Do we really have to?’ and ‘Ya’ll are doing it wrong!’- the comment section of a Reddit post with a unique math problem looked something like this, ...

You probably think you're smarter than a middle schooler. If you want to know for sure, try your hand at this basic math problem. It's harder than it looks — even if you think you have a solid grasp ...