Quite probably, every number you deal with in your life is a real number, including those on your bills, tax forms, and paycheck.

(You may occasionally see imaginary numbers if you are a physicist, engineer, or mathematician. If you are one of these, you are unlikely to be asking this question.)

(You may occasionally see imaginary numbers if you are a physicist, engineer, or mathematician. If you are one of these, you are unlikely to be asking this question.)