[問題] 求一題 9個1要變成10有幾種組合
老師今天玩腦筋急轉彎
在黑板上寫了111111111
說要變成10有幾種組合
只能加減不能乘除
我想破頭也不知道九個一怎麼加能加到十
希望鄉民給解答!!!
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05/02 18:17, , 1F
05/02 18:17, 1F
→
05/02 18:19, , 2F
05/02 18:19, 2F
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05/02 18:19, , 3F
05/02 18:19, 3F
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05/02 18:20, , 4F
05/02 18:20, 4F
推
05/02 22:07, , 5F
05/02 22:07, 5F
推
05/03 01:02, , 6F
05/03 01:02, 6F
推
05/03 11:50, , 7F
05/03 11:50, 7F
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05/03 11:53, , 8F
05/03 11:53, 8F
推
05/03 13:39, , 9F
05/03 13:39, 9F
推
05/03 18:10, , 10F
05/03 18:10, 10F
推
05/04 11:44, , 11F
05/04 11:44, 11F
推
05/11 18:12, , 12F
05/11 18:12, 12F
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05/11 18:14, , 13F
05/11 18:14, 13F
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05/11 18:14, , 14F
05/11 18:14, 14F
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05/11 18:14, , 15F
05/11 18:14, 15F
推
06/22 13:20, , 16F
06/22 13:20, 16F
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09/22 01:32, , 17F
09/22 01:32, 17F
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