Well, suppose there were 5 billion people Roughly half of them are men half of them are women What we want to know then is how many possible people could the 2 5 billion men make altogether ? with the 2 5 billion women?

假设这有50亿人,非常粗糙地分为一半男,一半女,我们下面想知道的是,25亿男人和,25亿女人总共在一起,能制造多少可能的人？

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