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Vitalik Buterin
@vitalik.eth
TIL the sum of all fibs is the second-next fib minus one. Kinda obvious once you think about it, but still... never seen this mentioned before.
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law
@traguy.eth
Good one How about this Multiplying a number by 9 and summing its digits will always get you back to 9😶
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haritowa
@haritowa
Parentheses for clarity
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