在数学中,有的题目既是计算题又是智力题。以下两题就是这种题目,很有趣。1.青蛙爬井题目:一口12米深的井,井底有一只青蛙,它白天向上爬4米,到夜里往下滑2米,那么第几天青蛙才能爬出这口井?【分析与解】解答这种题目,关键要理解两点:第一,青蛙白天向上 In mathematics, some topics are both computational questions and intellectual questions. The following two questions is the subject, very interesting. 1. frog climbing problem: a 12-meter-deep well, bottom of a frog, it climbs 4 meters during the day and down to 2 meters at night, then the first few days the frog can climb out of the well? 】 Answer this question, the key to understand two points: First, the frog up during the day