[질문] 1~10단까지 구구단이 어떻게 되죠?

구구다1단은없습니다.2단은2x1=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