That iff the sum of the digits of n is divisible by 3, then n is divisible by 3.(adsbygoogle = window.adsbygoogle || []).push({});

Defining t(n) to be the sum of the digits of n, can I just use induction show n-t(n)=3x is true. Since we know if this statement is true, then it cant be true for n+1, do I use n+3 as what I am trying to show holds true by induction?

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# How do you show

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