请教几道数学题

magicgirl2708 · 发表于 2010-8-8 04:30:09

1. On the number line, the number p is twice as many units from -2 as -2 is from 6. If p is less than -2, what is the value of p?

A. -18 B. -10 C. -6 D. 10 D. 14 ANS: A

2. If x<y<z and y-x>5, where x is an even integer and y and z are odd integers, what is the least possible value of z-x?

A. 6 B. 7 C. 8 D. 9 E. 10 AND: D

不知道为什么。请高人指教

thelma_ca · 发表于 2010-8-8 07:18:31

两个都选择B?

magicgirl2708 · 发表于 2010-8-8 07:29:23

A. -18 和 D. 9

thelma_ca · 发表于 2010-8-8 08:14:48

1. p+2=2(2+6), p为负数，所以取-18
2. 代数进去，设x=2, y=9,则z 最小取11

magicgirl2708 · 发表于 2010-8-8 23:42:44

谢谢，亲

请教几道数学题

所属分类: GMAT考试

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