3】if n is an integer then n is divisible by how many positive integers 1）n is the product of two different prime numbers 2) n and 2^3(2的3次方) are each divisible by the same number of positive integers. 正确答案：D
条件2）怎么判断出是有效的？ 可不可以顺便翻译下题目和条件2），谢谢
39】can the positive integer n be expressed as the product of two integers，each of which is greater than 1? 1)31<37 2)p is odd 正确答案：A 不懂，例如33=1×33，那岂不是有一个数是等于1，而不是Greater than 1咯？我觉得选E啊
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2013-1-22 14:06:48
收藏
收藏
楼主