Data Sufficiency
试题详情
题目：
If x is a positive integer, is x < 16?
(1) x is less than the average (arithmetic mean) of the first ten positive integers.
(2) x is the square of an integer.
选项:
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.
答案:
A
提问：
if x is a positive integer, is x <16?
(1)x is less than the average (arithmetic mean )of the first ten positive integers.
(2)x is the square of an integer.
我选的A,前十位正整数的平均数是5.5,x<5.5,可以得出x<16
哪里思路有错~
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