Can AMC 10 and 12 be submitted at the same time? What do you mean by 10A and 10B? If you are in the first year of high school, you are good at math but don't publish your diary in advance, is it appropriate? You can report it at the same time. A and b are just different in time. 10a and 12a are tested at the same time, as are 10b and 12b. For example, if you apply for 10 and 12 at the same time, then you have to take 10a and 12b or 12a and 10b.

There is nothing to report. It's good for you to report both.

I just can't report 10 for my sophomore year. 10 can only be attended by students of 10 and below.

Then it doesn't matter if you don't study in advance. No matter 10 or 12, only the calculus preparatory course is taken.

Another difference is that after you pass 10, you pass aime, and you have to take usajmo.

If you pass 12, and then pass aime, you can take the usamo exam, and you'd better apply to a university.

Don't ask questions