好題,簡單的數學推理題,不妥,應叫趣味推理題: 2.20+.20=3.12 OR 3.11 (2012) ?加法唯一性?

來源: jinjing 於 2011-03-09 08:47:51 [舊帖] [給我悄悄話] 本文已被閱讀：次

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