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In the figure shown, the circle has center O and radius 50, and point P has coordinates (50,0). If point Q (not shown) is on the circle, what is the length of line segment PQ ?
(1) The x-coordinate of point Q is – 30.
(2) The y-coordinate of point Q is – 40.
- AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- CBOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- DEACH statement ALONE is sufficient.
- EStatements (1) and (2) TOGETHER are NOT sufficient.
正确答案: A
对于(1)的正确不太理解。不知道圆心在哪里ORZ GMAT数学中的圆心如果用o表示,就是原点吗?
两个条件都有两个PQ的值~~但是~如果那两个点的关于X轴对称(既条件一的情况),因为P在X轴上~两个PQ的大小相同 如果两个点关于Y轴对称的话(条件二)~~由于P在Y轴右边~~所以很明显的会形成两个不同大小的PQ
这个是kmf的解析
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