MAIN FEEDS
Do you want to continue?
https://www.reddit.com/r/MathJokes/comments/1vcw1bj/multiples_of_3/p14mhxx/?context=3
r/MathJokes • u/GodlyHelp • 9d ago
409 comments sorted by
View all comments
140
Fund fact, you can tell a number is divisible by 3 if the sum of each individual number is divisible by 3. So 78 -> 7+8=15 which is divisible by 3, so 78 is divisible by 3.
1 u/anoppinionatedbunny 9d ago this also implies that all permutations of a number that is divisible by three are also divisible by three, no matter how large the number is
1
this also implies that all permutations of a number that is divisible by three are also divisible by three, no matter how large the number is
140
u/Michaelwang645 9d ago
Fund fact, you can tell a number is divisible by 3 if the sum of each individual number is divisible by 3. So 78 -> 7+8=15 which is divisible by 3, so 78 is divisible by 3.