Data Sufficiency

试题详情

题目:

If J, S, and V are points on the number line, what is the distance between S and V?
(1)     The distance between J and S is 20.
(2)     The distance between J and V is 25.

选项:

答案:

E

提问:

S和V的距离不是一下就能得出的吗?不是5就是45?
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