Mathematics 1 includes: high numbers, linear algebra, probability theory and mathematical statistics.
Mathematics II includes: high numbers and linear algebra.
Mathematics III includes calculus, linear algebra, probability theory and mathematical statistics.
Mathematics IV includes calculus, linear algebra and probability theory.
Most science and engineering majors study Math I and Math II, while a few science and engineering majors and agriculture and forestry majors study Math I and Math II. Counting three and counting four is economy, management and so on. Many students majoring in mathematics and economics study the number three.