Question

Write the following Hindu-Arabic numbers in Roman numerals;

$725$

Answer 1

In the Roman Numerals system, there are seven basic symbols to write any numeral. The symbols are given below:

Roman Numerals	$\mathbf{I}$	$\mathbf{V}$	$\mathbf{x}$	$\mathbf{L}$	$\mathbf{C}$	$\mathbf{D}$	$\mathbf{M}$
Hindu- Arabic Numerals	$\mathbf{1}$	$\mathbf{5}$	$\mathbf{10}$	$\mathbf{50}$	$\mathbf{100}$	$\mathbf{500}$	$\mathbf{1000}$

With the help of the above table, we can write the Hindu-Arabic numbers in Roman numerals.

Here, $725=700+20+5$

$=\mathrm{DCC}+\mathrm{XX}+\mathrm{V}$ ($\because$Repetition of a symbol in Roman numeral means addition, So, $\mathrm{DCC}=500+100+100=700$ and $\mathrm{XX}=10+10=20$)

$=\mathrm{DCCXXV}$

Therefore, the answer is $\mathrm{DCCXXV}$