How To Use Duodecimal system In A Sentence

• Two possible number systems that have, for purely theoretical reasons, attracted much attention, are the octonary and the duodecimal systems. The Number Concept Its Origin and Development
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• In a duodecimal system (base twelve) why are letters sometimes used instead of numbers?
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• Utopian of all things, a duodecimal system of counting. A Modern Utopia
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