理解“随机性”

问题：

I can't get my head around this, which is more random? 我无法理解这一点，这更随机？

rand()

OR 要么

rand() * rand()

I´m finding it a real brain teaser, could you help me out? 我发现它是一个真正的脑筋急转弯，你能帮助我吗？

EDIT: 编辑：

Intuitively I know that the mathematical answer will be that they are equally random, but I can't help but think that if you "run the random number algorithm" twice when you multiply the two together you'll create something more random than just doing it once. 直观地，我知道数学答案将是它们同样随机，但我不禁想到，如果你将两者相乘的话“运行随机数算法”两次，你会创造一些比随机更随机的东西它一次。

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解决方案：

参考一： https://stackoom.com/question/GbGA/理解-随机性
参考二： https://oldbug.net/q/GbGA/Understanding-randomness

来源：oschina

链接：https://my.oschina.net/u/4428122/blog/4324992