Given a positive number n, return true if n is a multiple of 9 and false if not. Do not make the division and do not use functions like mod or rem.
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Problem Comments
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2 Comments
Jean-Marie Sainthillier
on 5 Jan 2016
See Problem 42411 by Grant III
George-Felix Leu
on 6 Jan 2016
@Jean-Marie Sainthillier: You are right, sorry for not have checked before.
And thank you for the info, the problem-series by Grant III is very useful.
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