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1x2+2x3+3x4+·······+101x101=什么
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1x2+2x3+3x4+·······+101x101=什么
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应该是：“1x2+2x3+3x4+·······+100x101”吧? Dim i As Long, Isum As Long Isum = 0 For i = 1 To 100 Isum = Isum + i * (i + 1) Next i Debug.Print Isum运行结果：Isum= 343400...
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