themaninblack@lemmy.world to memes@lemmy.world · 1 day agoMath(s)lemmy.worldexternal-linkmessage-square34fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkMath(s)lemmy.worldthemaninblack@lemmy.world to memes@lemmy.world · 1 day agomessage-square34fedilink
minus-squareSeeker of Carcosa@feddit.uklinkfedilinkEnglisharrow-up0·1 day agoDivisibility by 3 rule is real. If the sum of the digits of a number is divisible by 3, then the number itself is also divisible by 3. Same goes with 9. There’s an 11 rule, but it’s a bit convoluted.
minus-squareemmanuel_car@fedia.iolinkfedilinkarrow-up0·23 hours agoThere’s also a rule 34, but it’s super advanced.
Divisibility by 3 rule is real. If the sum of the digits of a number is divisible by 3, then the number itself is also divisible by 3. Same goes with 9. There’s an 11 rule, but it’s a bit convoluted.
There’s also a rule 34, but it’s super advanced.