I re-took another Blue Book math test I'd taken some time ago. I again had no conscious memory of any of the problems, but did them all (save one) fast, finished early, and got everything right.
The problem I couldn't do was the last one in the set and thus the most difficult. My conscious thought was that I had no idea how to do it, a conclusion I arrived at after having in fact done the problem and finding that my answer wasn't amongst the choices. I left it blank.
After the timer rang and I had checked my answers, I went back to the last question.
Turned out my solution was right. It was my arithmetic that was wrong.
Not only do I not recognize the problems, it appears that I don't recognize the solutions, either, even a solution I have just written myself.
I'm going to re-read Arthur Reber, I think. One of my favorite books.