標題:
【為什麼"一打" = 12?】
發問:
【為什麼"一打" = 12的?】 為何不是10、11、13、14、15呢??
最佳解答:
Dozen is another word for the number twelve. The dozen may be one of the earliest primitive groupings, perhaps because there are approximately a dozen cycles of the moon or months in a cycle of the sun or year. The dozen is convenient because its multiples and divisors are convenient: 12 = 2 × 2 × 3 = 3 × 4 = 2 × 6, 60 = 12 × 5, 360 = 12 × 30. The use of twelve as a base number, known as the duodecimal system (also as dozenal), probably originated in Mesopotamia (see also sexagesimal).
其他解答:
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12的因數較多，以12件來包裝貨物較方便。 1排的包裝：1X12 2排的包裝：2X6 3排的包裝：3X4 （4排的包裝：4X3） 較我們常用的“10”更方便 1X10 2X5 5X2|||||中國古時有時係用12進制 正如時辰(子.酉...)生肖
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