-40,-20,-10,1,0.1,0.01,0.01,0.001,0.0001,0.00001有什么规律
-40,-20,-10,1,0.1,0.01,0.01,0.001,0.0001,0.00001有什么规律
数学人气：618 ℃时间：2019-10-23 12:52:59
优质解答
等比数列,(n+1)项/n项=1/2
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