...of the consecutive inte
编辑： admin 2017-25-02
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4
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看了上面的答案 咱先翻译一下题目吧.
S是91到100(不重复)的倒数的和.
S=1/91+1/92+...+1/100>1/100+1/100+...+1/100=1/10
故S>1/10.
S=1/91+1/92+...+1/100<1/91+1/91+...+1/91=10/91
故S<10/91
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