구구단
| 2x1>=2 |
3x1>=3 |
4x1>=4 |
5x1>=5 |
6x1>=6 |
7x1>=7 |
8x1>=8 |
9x1>=9 |
| 2x2>=4 |
3x2>=6 |
4x2>=8 |
5x2>=10 |
6x2>=12 |
7x2>=14 |
8x2>=16 |
9x2>=18 |
| 2x3>=6 |
3x3>=9 |
4x3>=12 |
5x3>=15 |
6x3>=18 |
7x3>=21 |
8x3>=24 |
9x3>=27 |
| 2x4>=8 |
3x4>=12 |
4x4>=16 |
5x4>=20 |
6x4>=24 |
7x4>=28 |
8x4>=32 |
9x4>=36 |
| 2x5>=10 |
3x5>=15 |
4x5>=20 |
5x5>=25 |
6x5>=30 |
7x5>=35 |
8x5>=40 |
9x5>=45 |
| 2x6>=12 |
3x6>=18 |
4x6>=24 |
5x6>=30 |
6x6>=36 |
7x6>=42 |
8x6>=48 |
9x6>=54 |
| 2x7>=14 |
3x7>=21 |
4x7>=28 |
5x7>=35 |
6x7>=42 |
7x7>=49 |
8x7>=56 |
9x7>=63 |
| 2x8>=16 |
3x8>=24 |
4x8>=32 |
5x8>=40 |
6x8>=48 |
7x8>=56 |
8x8>=64 |
9x8>=72 |
| 2x9>=18 |
3x9>=27 |
4x9>=36 |
5x9>=45 |
6x9>=54 |
7x9>=63 |
8x9>=72 |
9x9>=81 |