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找规律,填一填 1,3,9,27,81,,,,.1,2,6,24,,,.3,15,75,,,
人气:337 ℃ 时间:2019-08-19 05:14:55
解答
① 1x 3=33x3=99x 3 =2727 x3=……②1 x 2= 22 x3 =66 x4=2424 x 5 =……③3x 5= ...
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