themaninblack@lemmy.world to memes@lemmy.world · 1 day agoMath(s)lemmy.worldexternal-linkmessage-square41fedilinkarrow-up1524arrow-down123
arrow-up1501arrow-down1external-linkMath(s)lemmy.worldthemaninblack@lemmy.world to memes@lemmy.world · 1 day agomessage-square41fedilink
minus-squaretestfactor@lemmy.worldlinkfedilinkarrow-up10·1 day agohttps://brilliant.org/wiki/proof-of-divisibility-rules/ The 7 and 13 rules are pretty cool too.
minus-squareGrammarPolice@lemmy.worldlinkfedilinkarrow-up3·edit-21 day agoThis is insane stuff. 13 is truly mesmerizing. Although I don’t think I’m sharp enough for the proofs. Even the divisibility by 2 proof looks hellish.
https://brilliant.org/wiki/proof-of-divisibility-rules/
The 7 and 13 rules are pretty cool too.
This is insane stuff. 13 is truly mesmerizing. Although I don’t think I’m sharp enough for the proofs. Even the divisibility by 2 proof looks hellish.