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1×9+2=11
12×9+3=111
()×9+()=1111
()×9+()=11111
()×9+()=111111
()×9+()=1111111
()×9+()=11111111
()×9+()=111111111
人气:490 ℃ 时间:2019-10-29 19:55:00
解答
1×9+2=11
12×9+3=111
(123)×9+(4)=1111
(1234)×9+(5)=11111
(12345)×9+(6)=111111
(123456)×9+(7)=1111111
(1234567)×9+(8)=11111111
(12345678)×9+(9)=111111111
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