T? khóa: B? th?n, B? th?n tráng d??ng, T?ng c??ng sinh l?c, t?ng c??ng sinh lý, V??ng Ki?n Xbogy Ki?m duy?t n?i dung D??c s?: Cao Ng?c Qu?nh T? v?n chuyên môn??????????????????????????????????????????Rational quantities and Irrational numbers: The numbers which might be expressed as p/q, where p and q are integers and q will not be equivalent