alleryWhich number system recorded numbers on knotted strings?
ATallies
BAbacus
CSundial
DQuipu
Answer & Solution
Correct answer: D. Quipu
1. The quipu is a completely different system that recorded numbers on knotted strings.
2. An abacus uses beads, a tally stick uses notches and a counting rod uses rods.
3. Only the quipu relies on knots.
_Source: Wikipedia, Ethnomathematics, Numerals_
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