RUDE NUMBERS

Negative numbers were used in India as early as 7th century — ancient mathematicians were already dealing with losses.

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Indian mathematicians described rules for negatives and debts/credits early on, helping formalize arithmetic beyond counting. By around the 7th century, texts treated negatives as valid quantities with consistent operations.

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Negative numbers were used in India as early as 7th century — ancient mathematicians were already dealing with losses. | SmartAss Facts