Q26:

If n is a positive integer that is less than 10, what is the value of n?

(1) n is the tenth digit in the decimal representation of 1/n.

(2) n is the hundredth digit in the decimal representation of 1/n.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

这道题目，我想考点就是穷举法，就像第二楼说的那样，把1－9的倒数都列出来，然后一目了然

满足1）的只有3

满足2）的有两个3和6

所以选A。

我的解法是：由1得到1/n > n/10，所以n<＝3，n＝1和2时显然不符合

由2得到1/n>n/100 , 所以n< 10，其中3和6都满足。