. . "Rational number: A number which can be represented as $ \\dfrac{p}{q}$ where p is an integer and q is a non-zero integer i.e., $ p \\in \\mathbf{Z}$ and $ q \\in \\mathbf{Z} \\setminus \\{0\\}$ and p and q arerelatively prime as their greatest common divisor is 1, i.e., $ \\left(p,q\\right) =1$ ." . . .