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新加坡一道为十五六岁学生设计的奥数题被人放上网,不料惹得西方国家网民绞尽脑汁争相答题。许多人惊呼,新加坡孩子竟然要做这么难的数学题啊!
值得注意的是,英国、美国等西方国家网民普遍震惊,而一些亚洲国家网民则相对淡定。中国妈妈表示,这不过是我5年级的儿子奥数题水平!
下面放题,反正我是做不出来,谁爱做谁做:
原题:
Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is.
Cheryl gives them a list of 10 possible dates.
May 15, May 16, May 19
June 17, June 18
July 14, July 16
August 14, August 15, August 17
Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
Albert:I don’t know when Cheryl’s birthday is, but I know that Bernard does not know too.
Bernard:At first I don’t know when Cheryl’s birthday is, but I know now.
Albert:Then I also know when Cheryl’s birthday is.
So when is Cheryl’s birthday? |
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