Yoruba numerals
According to Lounge, the Yoruba language has a rather elaborate vigesimal (base-20) numeral system that involves both addition and subtraction and multiplication. The base of the counting system is ogún 'twenty' (or 'score'). There are words for each of the decades; units in 1–4 are created by adding to these, while units in 5–9 are created by subtracting from the next decade. The odd decades are created by subtracting ten from the next even decade, as in Danish. Up to 30, Yoruba has distinct forms of the numerals for counting objects, which derive from counting cowries.
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Yoruba numerals
According to Lounge, the Yoruba language has a rather elaborate vigesimal (base-20) numeral system that involves both addition and subtraction and multiplication. The base of the counting system is ogún 'twenty' (or 'score'). There are words for each of the decades; units in 1–4 are created by adding to these, while units in 5–9 are created by subtracting from the next decade. The odd decades are created by subtracting ten from the next even decade, as in Danish. Up to 30, Yoruba has distinct forms of the numerals for counting objects, which derive from counting cowries.
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According to Lounge, the Yorub ...... lonan meji '20,000 two times'.
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According to Lounge, the Yorub ...... derive from counting cowries.
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Yoruba numerals
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