alleryWhat did the quipu use to record numbers?
APainted stones
BClay coins
CCarved bones
DKnotted strings
Answer & Solution
Correct answer: D. Knotted strings
1. A quipu is a very different number system from written digits.
2. It stores numbers in knots tied on strings.
3. Stones, coins and bones are not how a quipu works.
_Source: Wikipedia, Ethnomathematics, section Numerals_
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