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var title_140611='Re:请教高手一些排列组合题目~~';
var body_140611='第八题:2,3,3,4,8,()&nbsp;答案选A16<br><br>做法:第一项+第三项/2=第二项&nbsp;同理第二项+第四项/4=第三项---该数列规律为&nbsp;和数列/等比数列<br>得出答案为A<br><br>急盼9题解法.<br>';
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