1 2 4 8 16 32 64 128 …叫什么（数学概念）?
不是叫等差数列吧?那叫什么呢?
人气：451 ℃ 时间：2019-12-19 11:44:01
解答
等比数列,因为后一个除以前一个都等于2
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