alleryWhat did the Inca use to store numbers in a decimal system?
AClay tablets
BKnotted cords
CCarved sticks
DPainted stones
Answer & Solution
Correct answer: B. Knotted cords
1. The Inca tied knots in cords called quipu.
2. The knots stored numbers in a decimal positional system.
3. Tablets, sticks and stones are not what the source names.
_Source: Wikipedia, Positional notation, Lead section_
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