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