国际顶尖MBA申请交流平台--TOPWAY MBA

标题: 800分五套上的疑问 [打印本页]

作者: tanmagic 时间: 2005-10-9 11:57 标题: 800分五套上的疑问

if r is a positive integer, does r have exactly 4 distinctive factors?

从r is the product of two different prime numbers? 能够推得出吗？难道r不能等于2或3？

作者: mikejia 时间: 2005-10-10 00:09

if there is a `或`. the answer is no`.

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