Is it necessary to take the exam in the third stage of American Mathematical League?
This is necessary. According to relevant data, taking part in AMC math contest can cultivate students' mathematical thinking and problem-solving ability, improve students' math scores and academic competitiveness, and also lay a solid mathematical foundation for future academic and professional development. The "Major League Mathematics Cup" in the United States is the most influential mathematics competition for primary and secondary schools in the United States and even North America, and it is also a mathematics competition for primary and secondary schools with global influence.