You’ve no doubt seen some version of this viral math problem making the rounds on Facebook, Reddit or X (though we’ve given it a seasonal twist): He bought it again for $1,100. He sold it again for $1 ...

‘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, ...