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:-27,-64,-125,()。A.-144 B.-169 C.-196 D.-216
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81,64,121,36,(),16 A.144B.169C.196D.25
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81,64,121,36()16 A.144 B.169 C.196 D.225
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81,64,121,36,(),16 A.144 B.169 C.196 D.25
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-27,-64,-125,()。 A.-144 B.-169 C.-196 D.-216
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一群学生刚好排成一个方阵,从外往里数第4层刚好有20人,问共有多少学生?A.144 B.169 C.196 D.225
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27,16,25,36,23,64,21,()A.81 B.100 C.121 D.19