古罗马人的遗嘱：传说，有一个古罗马人临死时，给怀孕的妻子写了一份遗嘱：生下来的如果是儿子，就把遗产的2/3给儿子，母亲拿1/3；生下来的如果是女儿，就把遗产的1/3给女儿，母亲拿2/3。结果这位妻子生了一男一女。怎样分配，才能接近遗嘱的要求呢？

分析：由第一种情况可知，儿子与母亲所分遗产的比是：2:1；由第二种情况可知，母亲与女儿所分遗产的比是：2:1，所以三人所分遗产的比应为：4:2:1，即把财产总共分为7份，儿子拿四份，母亲拿二份，女儿拿1份。

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