WORLD HISTORY

Detailed explanation-1: -Around the year 500, Aryabhata devised a decimal system of positional numeration, which he describes in his treatise Aryabhatiya, a poem written in Sanskrit composed of 121 verses.

Detailed explanation-2: -A forerunner of modern European decimal notation was introduced by Simon Stevin in the 16th century. John Napier introduced using the period (.) to separate the integer part of a decimal number from the fractional part in his book on constructing tables of logarithms, published posthumously in 1620.

Detailed explanation-3: -decimal system, also called Hindu-Arabic number system or Arabic number system, in mathematics, positional numeral system employing 10 as the base and requiring 10 different numerals, the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. It also requires a dot (decimal point) to represent decimal fractions.

Detailed explanation-4: -Hindu astronomers and mathematicians Aryabhata, born in 476, and Brahmagupta, born in 598, are both popularly believed to have been the first to formally describe the modern decimal place value system and present rules governing the use of the zero symbol.

Detailed explanation-5: -The decimal system of currency in India was introduced on 1 April 1957. India changed from the rupee, anna, pie system to decimal currency.