Write in Roman Numerals. $73$

Convert into Roman numbers.

$73$ can be written as $73=50+10+10+3$

In roman, $50$ is represented by $\mathrm{L}$, $10$ is represented by$\mathrm{X}$, and $3$ is represented by $\mathrm{III}$.

$\begin{array}{rcl}73& =& 50+10+10+3\\ & =& \mathrm{L}+\mathrm{X}+\mathrm{X}+\mathrm{III}\\ & =& \mathrm{LXXIII}\end{array}$

Hence, the given number $73$ in Roman Numerals is, $\mathrm{LXXIII}$.