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And 299999999 is divisible by 13 (lemmy.world)

submitted 3 weeks ago by m4m4m4m4@lemmy.world to c/science_memes@mander.xyz

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[–] TwilightKiddy@programming.dev 8 points 3 weeks 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 3 weeks ago* (last edited 3 weeks 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.

[–] JamesStallion@sh.itjust.works 2 points 3 weeks ago

Fucking lol

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

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

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

Never say never. 1/0 = 0

[–] LordTrychon@startrek.website 1 points 3 weeks ago

Interesting read. Thank you.