A: Because I do a pretty good job coming up with questions that are similar to ones you might see on test day. Like this one (from my circles post):
It’s not exactly the same, but if you had solved this question before the October test, I’d say you had a significantly better chance of answering that tough circle question correctly.
And because you’re funny 🙂
It’s the luck of the draw(ing) :p.
There are a number of ways the SAT can ask about circles, and yours happened to hit the money. Great job!
You’re 100% right. The real value in this site (as I see it) is much more in the kind of thinking it encourages than any lucky guesses I might make, but let me have my fun! 🙂