Poorly Drawn Lines by Reza Farazmand for May 10, 2017

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    kr155150 Premium Member almost 7 years ago

    “Carry the twelve” = brilliant! That’s my kind of math.

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  2. Louis2
    PoodleGroomer  almost 7 years ago

    Base 12 math explains the extra bead on the abacus we are never supposed to use.

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