Digital Root of 3 Consecutive Numbers ending in Multiple of 3/Historical Note
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Historical Note on Digital Root of 3 Consecutive Numbers ending in Multiple of 3
According to David Wells in his Curious and Interesting Numbers, 2nd ed. of $1997$, this result is due to Iamblichus Chalcidensis.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $6$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $6$