@[email protected] to [email protected] • 6 months agoMath(s)lemmy.worldimagemessage-square42fedilinkarrow-up1585
arrow-up1585imageMath(s)lemmy.world@[email protected] to [email protected] • 6 months agomessage-square42fedilink
minus-squareSeeker of CarcosalinkfedilinkEnglish10•6 months 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.
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.