1-6. 곱셈
1 1 x 1 =
2 2 x 9 =
3 3 x 4 =
4 3 x 7 =
5 8 x 9 =
6 5 x 2 =
7 3 x 2 =
8 3 x 2 =
9 8 x 9 =
10 2 x 9 =
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