@Peter My main problem with the question is not that it's basic, but that anyone who even bothers to do a multiplication on paper would know that (by the elementary-school method) the last digit of the output only depends on the last digits of the inputs.
I am not sure whether I should have answered this question ? It is a useful alternative method (useful also for future readers) , but on the other hand the OP did not invest much effort. Shall I delete it again ? Opinions, please.
this post might be undeleted. Consider that it contained an ugly (now deleted) reply of the author to the given (helpful) comment. So should it be undeleted, please help to delete it again.
@XanderHenderson @TeresaLisbon: Both question and answer have been upvoted in the few days since it was mentioned in this room. Clearly this is not just a coincidence. Although it is an old post, the upvoters appear to want to preserve bad questions, and also reward the asker and answerer for that.
@amWhy I might go to sleep early. I taught until 8:45 on Thursday (didn't get home until 9:30), and ended up being up rather late last night working on an exam (which I didn't finish). I'm sort of half tempted to grab a bottle of wine, make some popcorn, watch some bad television, and got to bed a 6. :\
@XanderHenderson Sounds good to me! What's the outlook for your semester? I sure hope it's not the challenge you faced in summer, with so little "face time"!
Everything is online. Even in pre-pandemic times, about half of the classes I teach would be remote (me in one classroom, most of my students in five or six other classrooms).
And I've got just over 18 load this semester (1.9 more load, and they would have to start paying me the "big" bucks). Two sections of calculus, and four sections of precalc.
Though I only have about 90 students altogether, so it isn't necessarily the worst semester I've had---a couple of extra contact hours every week is offset by the relatively small class sizes.
@amWhy MathFest was fun, I got a lot of good ideas from the other NExT participants, and we have some meetings in the next couple of weeks. Thus far, it seems to be fruitful.
