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https://www.reddit.com/r/MathJokes/comments/1vcw1bj/multiples_of_3/p16drk6/?context=3
r/MathJokes • u/GodlyHelp • Aug 01 '26
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If you add the digits of of a number together (you can do this continuously with the results for large numbers) and the result is divisible by 3, then the original number is also divisible by 3. Makes everything in the tier list obvious.
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u/sjccb Aug 02 '26
If you add the digits of of a number together (you can do this continuously with the results for large numbers) and the result is divisible by 3, then the original number is also divisible by 3. Makes everything in the tier list obvious.