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.
See Problem 42411 by Grant III
@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.
14996 Solvers
119 Solvers
296 Solvers
83 Solvers
Create a square matrix of zeros of even order
72 Solvers