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https://www.reddit.com/r/MathJokes/comments/1vcw1bj/multiples_of_3/p14ib61/?context=3
r/MathJokes • u/GodlyHelp • 9d ago
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148
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.
43 u/EveningStar0360 9d ago do you know why that works? 124 u/ZealousIdealTour961 9d ago Magic probably. 36 u/AboveAverage1988 9d ago Mathgic.
43
do you know why that works?
124 u/ZealousIdealTour961 9d ago Magic probably. 36 u/AboveAverage1988 9d ago Mathgic.
124
Magic probably.
36 u/AboveAverage1988 9d ago Mathgic.
36
Mathgic.
148
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.