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两男两女3/8,三男一女1/4,三女一男1/4,四男或四女各是1/16.
qiuqiu
(秋秋)
(#364610@0)
Last Updated: 2002-2-10
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Replies, comments and Discussions:
GMAT题，一对夫妇生了4个小孩，问2男2女的概率是多少？我的答案是1/5，但友人说是3/8。
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