themaninblack@lemmy.world to memes@lemmy.world · 2 days agoMath(s)lemmy.worldexternal-linkmessage-square42fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkMath(s)lemmy.worldthemaninblack@lemmy.world to memes@lemmy.world · 2 days agomessage-square42fedilink
minus-squaretestfactor@lemmy.worldlinkfedilinkarrow-up0·2 days agohttps://brilliant.org/wiki/proof-of-divisibility-rules/ The 7 and 13 rules are pretty cool too.
minus-squareGrammarPolice@lemmy.worldlinkfedilinkarrow-up0·edit-22 days 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.