Which is the next term in this series?100 121 144 202 244 400.
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人气:414 ℃ 时间:2019-11-02 09:30:00
解答
100,121,144,202,244,400,x,x=?
分析:100=10^2
121=11^2
144=12^2
202=(100+1)×2
244=(121+1)×2
400=100×4
x=121×4=484
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