From the concept of Rational number:
A rational number is defined for any integer, fraction, terminating decimal, or repeating decimal, or rational number is defined by the fraction also.
For example:
The rational number is:
[tex]\begin{gathered} (1).\sqrt[]{49} \\ (2).7 \\ (3).3.\bar{3} \\ (4).\frac{7}{2} \\ (5).6.5 \end{gathered}[/tex]