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?

I.

II.

III.

A. None

B. I only

C. III only

D. II and III only

E. I, II, and III

用91,100分别为分母进行10项的求和,可算出整个区间,再去看值