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啊作者: Jeffrey-N 时间: 2013-2-19 21:16
