20 0 3年“通讯杯”高中数学综合应用能力竞赛已落下帷幕 .这次竞赛 ,无疑对提高参赛者的数学综合应用能力有很大帮助 .美中不足的是命题组提供的最后一道解答题的解法 1有一点问题 .现将解法1抄录如下 (见文 [1]) .解法 1　 1) ,2 )略 .3)不妨设n为k位整数 ,则n xn≤n[1+1 10 The 2008 “Communication Cup” high school mathematics comprehensive application ability contest has come to a close. This competition will undoubtedly greatly improve the participants’ ability in comprehensive mathematics application. The only drawback is the solution to the last solution question provided by the proposition group. 1 There is a problem. We now copy Solution 1 as follows (see [1]). Solution 1 1), 2) Slightly. 3) Let n be a k-bit integer, then n xn ≤ n [1+1 10