"Undoubtably" is also spelled incorrectly.
Apparently, an unscientific search brings up CSA 464 taken at Miami University (Ohio), course on algorithms of course... but I'm trying to find the professor. I had a professor once that was similar to this one, though not as brash... CS prof that was diligent about spelling and the correctness of English prose and/or phrases. In several homeworks and exams I pointed out fallacies in his questions- but again, nothing comical though like this one.