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Digit Sum Pattern: Multiplying by 9
I noticed that when I multiply a number by 9 and add the digits of the result together, I always get 9. Is this true for all numbers? Can you explain why or why not?
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I noticed that when I multiply a number by 9 and add the digits of the result together, I always get 9. Is this true for all numbers? Can you explain why or why not?
Sorry, there were no replies found.
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