来自关艳霞的问题
1×9+2=1112×9+3=111()×9+()=1111()×9+()=11111()×9+()=111111()×9+()=1111111()×9+()=11111111()×9+()=111111111
1×9+2=11
12×9+3=111
()×9+()=1111
()×9+()=11111
()×9+()=111111
()×9+()=1111111
()×9+()=11111111
()×9+()=111111111
1回答
2020-02-29 16:55