Thanks for your response Jonathan, my question was about PT35.S1.Q18. I think a mod edited my post when I originally posted it, and put int he wrong question. I've just seen it and changed it back.
Ahh, that would be it then. Yes, it's **PT31.S1.G1** instead of **G2**, which was what is meant to be part of the In/Out Problem Set. The correct version is available for print on that page now:
https://7sage.com/lesson/inout-game-problem-set-3/