Find two rational numbers of the form
Question:

Find two rational numbers of the form $\frac{p}{q}$ between the numbers $0.2121121112 \ldots$ and $0.2020020002 .$

Solution:

The rational numbers between the numbers 0.2121121112… and 0.2020020002… are:

$0.21=\frac{21}{100}$ and $0.205=\frac{205}{1000}=\frac{41}{200}$

Disclaimer: There are an infinite number of rational numbers between two irrational numbers.