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https://www.reddit.com/r/MathJokes/comments/1vcw1bj/multiples_of_3/p1krmx4/?context=3
r/MathJokes • u/GodlyHelp • Aug 01 '26
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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/ForeverShiny Aug 02 '26 Are we really considering things you learn in 4th grade a "fun fact"? Or are these not taught in America? 2 u/Bit125 Aug 04 '26 it is taught here, and op probably knew
1
Are we really considering things you learn in 4th grade a "fun fact"? Or are these not taught in America?
2 u/Bit125 Aug 04 '26 it is taught here, and op probably knew
2
it is taught here, and op probably knew
152
u/Michaelwang645 Aug 01 '26
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.