GWD25-Q16

Q16

If √x is an integer, what is the value of √x?

(1)    11<x<17  

(2)    2<√x<5 

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     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.

Answer: A

给的答案是A，但是想不通

(1)    11<x<17  可以推出
                    √x=+/-4

(2)    2<√x<5  可以推出
                            √x=3 or 4

综合（1），（2）可以推出√x=4，答案应该为C啊，请指教

根号一定是正数，楼主可能搞错了，正负号应该是这样的：

X的平方=5  =>  X=正负根号5