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Cake day: November 12th, 2023

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  • you’re thinking about this backwards: the decimal notation isn’t something that’s natural, it’s just a way to represent numbers that we invented. 0.333… = 1/3 because that’s the way we decided to represent 1/3 in decimals. the problem here isn’t that 1 cannot be divided by 3 at all, it’s that 10 cannot be divided by 3 and give a whole number. and because we use the decimal system, we have to notate it using infinite repeating numbers but that doesn’t change the value of 1/3 or 10/3.

    different bases don’t change the values either. 12 can be divided by 3 and give a whole number, so we don’t need infinite digits. but both 0.333… in decimal and 0.4 in base12 are still 1/3.

    there’s no need to change the base. we know a third of one is a third and three thirds is one. how you notate it doesn’t change this at all.





  • pyre@lemmy.worldtoScience Memes@mander.xyzI just cited myself.
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    7 hours ago

    i don’t think any number system can be safe from infinite digits. there’s bound to be some number for each one that has to be represented with them. it’s not intuitive, but that’s because infinity isn’t intuitive. that doesn’t mean there’s a problem there though. also the arguments are so simple i don’t understand why anyone would insist that there has to be a difference.

    for me the simplest is:

    1/3 = 0.333…

    so

    3×0.333… = 3×1/3

    0.999… = 3/3