I need some math puzzles to sharpen my math skills.

來源: sportwoman 於 2012-05-09 05:01:04 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (97 bytes)
本帖於 2012-05-10 17:52:06 時間, 由版主 林貝卡 編輯

My brain needs to be teased, and welcome to tease me as well! :))

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