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It is unknown why 60 was chosen. However, it is a very convenient number for expressing fractions. 60 is the smallest number divisible by the first six counting numbers as well as by 10, 12, 15, 20 and 30.

A2. The base 60 system - minutes and seconds, degrees, dates back to the Babylonians who also invented the first writing system - Cuneiform. They also had an interest in astronomy which may have encouraged the degree etc.

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11y ago

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