# Is 7 an irrational number?

No. $7$ is not an irrational number.
An irrational number is a real number which cannot be expressed as $\frac{a}{b}$ where $a$ and $b$ are integers. As $\frac{7}{1} = 7$ and $7$ and $1$ are integers, this means $7$ is not an irrational number.