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Base 12 - Numberphile
Key Facts In This Video
In the base-12 system, the symbols are our usual 1-9, then X (dek) for 10, Ɛ (el) for eleven, and 10 (doh) for 12. 00:42
The duodecimal system would make everyday calculation easier, since 12 has more factors than 10 and is easier to divide by thirds and fourths. 03:10
The cultures that use base-12 count on the segments of their fingers. 08:20