[스크랩] 국악 구구단
● 2X1=2, 2X2=4, 2X3=6, 2X4=8, 2X5=10, 2X6=12, 2X7=14, 2X8=16, 2X9=18 ● 3X1=3, 3X2=6, 3X3=9, 3X4=12, 3X5=15, 3X6=18, 3X7=21, 3X8=24, 3X9=27 ● 4X1=4, 4X2=8, 4X3=12, 4X4=16, 4X5=20, 4X6=24, 4X7=28, 4X8=32, 4X9=36 ● 5X1=5, 5X2=10, 5X3=15, 5X4=20, 5X5=25, 5X6=30, 5X7=35, 5X8=40, 5X9=45 ● 6X1=6, 6X2=12, 6X3=18, 6X4=24, 6X5=30, 6X6=36, 6X7=42, 6X8=48, 6X9=54 ● 7X1=7, 7X2=14, 7X3=21, 7X4=28..