this post was submitted on 04 Nov 2024
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Science Memes

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And 299999999 is divisible by 13 (lemmy.world)
submitted 1 week ago by m4m4m4m4@lemmy.world to c/science_memes@mander.xyz
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[–] TwilightKiddy@programming.dev 8 points 1 week ago (2 children)

Well, on the side of easy ones there is "if the last digit is divisible by 2, whole number is divisible by 2". Also works for 5. And if you take last 2 digits, it works for 4. And the legendary "if it ends with 0, it's divisible by 10".

[–] darkpanda@lemmy.ca 9 points 1 week ago* (last edited 1 week ago) (1 children)

There’s also the classic “no three positive integers a, b, and c to satisfy a**n + b**n = c**n for values of n greater than 2“ trick but my proof is too large to fit in this comment.

[–] Scubus@sh.itjust.works 3 points 1 week ago (1 children)

Its never divisible by zero, and its always divisible by one

[–] wicked@programming.dev 3 points 1 week ago (1 children)

Never say never. 1/0 = 0

[–] LordTrychon@startrek.website 1 points 1 week ago

Interesting read. Thank you.