gwd11-4

Q4:

If S is the sum of the reciprocals of the consecutive integers from 91 to 100, inclusive, which of the following is less than S?

II.

III.

A. None

B. I only

C. III only

D. II and III only

E. I, II, and III

Rank: 3 Rank: 3

2^#

elites发表于 2005-5-22 08:39 | 只看该作者

Answer: c

Reason: 1/91 < 1/90, …. , 1/100< 1/90 , so the sum of them <1/9

1/91 > 1/100 ,….., 1/100 >=1/100, so the sum of them > 1/10

Rank: 4

3^#

efficiency发表于 2005-5-23 08:49 | 只看该作者

谢谢解答！！[em17]

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