回複：錯了，勿進！

來源: thisis 於 2013-10-27 15:07:50 [] [舊帖] [給我悄悄話] 閱讀數 : (95 bytes)
回答: 錯了，勿進！ 由 liusan 於 2013-10-27 14:48:20

If power operation is allowed, then 1^6=1, 8-7=1. then merge these two 1's and we get 11

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