观察下面三行数:1:-3,9,-27,81,-243;2:0,12,-24,84,-240;3:1,-3,9,-27,81.写出各行第8
人气:351 ℃ 时间:2019-09-05 08:57:07
解答
第一行:6561 第二行:6564 第三行:-2187
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