What is the number of digits in $7^{25}$, $8^{23}$ and $9^{20}$ respectively? [Given ${\log }_{10}\left(2\right) = 0.301$, ${\log }_{10}\left(3\right) = 0.477$, ${\log }_{10}\left(7\right) = 0.845$]

Consider the following statements :

1. $\sqrt{75}$ is a rational number.
2. There exists at least a positive integer $x$ such that $\frac{-4x}{5}<\frac{-7}{8}$
3. $x-2x<1$ for all real values of $x$.
4. $4.232323......$ can be expressed in the form $\frac{p}{q}$ where $p$ and $q$ are integers.

Which of the above statements are correct?