100이하의3의배수는9,27,81입니다,^^(3x3=9/3x3x3=27/3x3x3x3=81)혹구구단말씀하신거라면,3.6.9.12.15.18.21.24.27.30.33.36.39.42.45.48.51.54.57.60.63.69..등
당신은 어느 그룹입니까?