the question is , if f(n)= 1+10+10^2 +... + 10^n , where n is integer.(adsbygoogle = window.adsbygoogle || []).push({});

find the least n s.t. f(n) is divisible by 17 , I have no idea about it.

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# The question is , if f(n)= 1+10+10^2 + + 10^n , where n is

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