Hindu Arabic numeral system was invented by Indian mathematicians.
About 500 CE
It is the Hindu-Arabic numeral system.
Sometime in the 1st - 4th century
The concept of zero
12629 is already in Hindu-Arabic numerals
X=10 in Hindu-Arabic.
What is LXXXIV in hindu arabic
It is already expressed in Hindu-Arabic numerals
The Hindu-Arabic of LXXXIV is 84.
It is already in Hindu-Arabic numerals
It is already in Hindu-Arabic numerals