Why 20? Why 40? A possible explanation of a special role of numbers 20 and 40 in traditional number systems

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Why 20? Why 40? A possible explanation of a special role of numbers 20 and 40 in traditional number systems

机译：为什么是20？为什么是40？关于数字20和40在传统数字系统中的特殊作用的可能解释

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《Applied mathematical sciences》 |2013年第144期|共6页
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机译：为什么20？为什么40？传统数字系统中20和40特殊作用的可能解释

Why 20? Why 40? A possible explanation of a special role of numbers 20 and 40 in traditional number systems

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