alleryWhich idea is attributed to India in the history of the decimal number system?
AZero as a number
BThe abacus
CRoman numerals
DThe slide rule
Answer & Solution
Correct answer: A. Zero as a number
1. The decimal system needed a way to treat nothing as a quantity.
2. The concept of 0 as a number, not merely a separator, is attributed to India.
3. The abacus, Roman numerals and slide rule are not credited to India in the text.
_Source: Wikipedia, History of science and technology on the Indian subcontinent, Middle Kingdoms_
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