请教一道数学题

chinrai

If √x is aninteger, what is the value of √x?
(1)    11<x<17
(2)    2<√x<5
        A. Statement(1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) aloneis not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHERstatement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.


请教gmat里，√x指的是平方根还是算术平方根？

sdcar2010

AAAAAAAAAAAAAAAAaaa  x = 16

tree830224

√x表示算数平方根；

1）X∈{12,13,14,15,16}，且√x为正整数，则X=16，√x=4；sufficient;
2）√x∈{3,4}，则√x=3，or √x=4; unsufficient;

chinrai

因为这个丢分太可惜了