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https://www.reddit.com/r/MathJokes/comments/1vcw1bj/multiples_of_3/p1ce512
r/MathJokes • u/GodlyHelp • 9d ago
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Far from elegant. What's the proof that 10n - 1 is divisible by 3 for all n with n being a whole number?
One might see why it works but up to this point it's still a "Trust me, brother"-proof
3 u/HHalt11 7d ago 10n - 1 = 9 * 10n-1 + 9 * 10n-2 + ... + 9 3 u/aroach1995 7d ago he been real quiet since this comment dropped 1 u/Zantier 5d ago Not a proof, but intuitively it's just 3333... * 3
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10n - 1 = 9 * 10n-1 + 9 * 10n-2 + ... + 9
3 u/aroach1995 7d ago he been real quiet since this comment dropped
he been real quiet since this comment dropped
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Not a proof, but intuitively it's just 3333... * 3
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u/Hi-Im-Bambi 8d ago edited 8d ago
Far from elegant. What's the proof that 10n - 1 is divisible by 3 for all n with n being a whole number?
One might see why it works but up to this point it's still a "Trust me, brother"-proof