计算:100/1+100/2+100/3+…+100/99等于多少?

日期:2021-12-29 16:18:00 人气:1

计算:100/1+100/2+100/3+…+100/99等于多少?

100/1+100/2+100/3+100/4+??????????+100/96+100/97+100/98+100/99
=100/1×(1+2+3+4+……+98+99)
=100/1×(1+99)×99/2
=99/2
=49.5
    A+
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