You should tell the teacher about it, honesty is valuable; After you come down, analyze it yourself and you will get the first prize next time. (I agree with this)

If you don't want to do this, you can answer the wrong question again, analyze the causes of the mistake, summarize the solutions to this kind of problem, and then get this hundred points. Although dishonest, I won't make mistakes next time and won't affect my grades. I don't quite agree.

Think for yourself and decide for yourself.