Insert a rational number and an irrational number between the following:
$0.0001$ and $0.001$

(N/A) rational number is a number that can be expressed in the form $p/q$,where $p$ and $q$ are integers and $q \neq 0$. $A$ terminating decimal is a rational number.
$1$. Rational number: We can choose $0.0005$. Since $0.0005 = 5/10000 = 1/2000$,it is a rational number lying between $0.0001$ and $0.001$.
$2$. Irrational number: An irrational number is a non-terminating and non-recurring decimal. We can construct one by following a pattern: $0.0001010010001...$ This number is clearly greater than $0.0001$ and less than $0.001$,and it does not terminate or repeat,making it an irrational number.