Can the students who get the scores tell us their answers to the big math questions?

I got a higher score in math 1 than I expected. The big question feels that as long as the whole is right, the teacher didn't find fault with one or two points, all of them were full marks. The problem of the right method is miscalculated, and it seems that it is given as much as possible. If you can't do it, the teacher will also give you some translation conditions, such as the final probability. I only wrote the definition of unbiased estimation, and I think the teacher gave me at least 2 points. I hope I can give some reference to the landlord.