Answer:
When asked how many years of math you have taken, it is typically best to provide a comprehensive answer that includes all the math courses you have taken up until now. This will give the person asking the question a complete picture of your math background and help them better understand your expertise in the subject.
If you are currently enrolled in a math course, including it in your answer is generally appropriate. You can say, "I have taken X years of math, including the math course I am currently enrolled in." This shows that you are actively learning and developing your skills in math.
When listing the math courses you have taken, you can include the name of the course, the level of the course (e.g. high school, college, graduate level), and any relevant information that would help the person understand the scope and rigour of the course. For example, you might say, "I have taken Algebra I, Geometry, and Calculus in high school, and Calculus II and Linear Algebra in college."
In summary, when asked how many years of math you have taken, it is generally best to provide a comprehensive answer that includes all the math courses you have taken up until the present day, including the course you are currently enrolled in.