2025 Amc 12b. 2021 amc 12b problems/problem 25 the following problem is from both the 2021 amc 10b #25 and 2021 amc 12b #25 , so both problems redirect to this page. Two of our students were among the 35 perfect scorers worldwide on the amc 10a:
We are aware that elements of the amc 10/12 a competition were leaked. 2025 (tbd) a math challenge for high school students held at stanford university.