问题描述：
脑筋急转弯和简单的数学题 【英文版的跟详细】请尽量参考英文版.
1,两位妈妈带着两位孩子去购物.她们在书店各买了1本邮集,但是当他们回去并数了数的时候,却发现了只有3本,这是为什么?Two mather a nd two daughters go shopping.Eweryone buys a postcard in a bookstore.When they come back and count ,there are only 3 postcards.Why?
2,我们都知道每个桌子都有4条腿,当我们锯掉了一条的时候,这张桌子还有几条腿?We all know a desk has 4 corners.If we cut one corner off .How many corners does the desk have?
3,【我翻译不过来,man is 40 years old.His son is 13.How long ago was his age four times his son's?
1,两位妈妈带着两位孩子去购物.她们在书店各买了1本邮集,但是当他们回去并数了数的时候,却发现了只有3本,这是为什么?Two mather a nd two daughters go shopping.Eweryone buys a postcard in a bookstore.When they come back and count ,there are only 3 postcards.Why?
2,我们都知道每个桌子都有4条腿,当我们锯掉了一条的时候,这张桌子还有几条腿?We all know a desk has 4 corners.If we cut one corner off .How many corners does the desk have?
3,【我翻译不过来,man is 40 years old.His son is 13.How long ago was his age four times his son's?
问题解答：
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