5=5/13=6/27/3 2=8/49/5 5/3=10/6
分子 分母 分別呈等差數(shù)列
5,3,7/3,2,9/5,5/3,()該怎么解!
5,3,7/3,2,9/5,5/3,()該怎么解!
數(shù)學(xué)人氣:537 ℃時間:2020-10-01 15:02:45
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