请教几道数学题

sayysong

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

taohuaxian

两个都选择B?

sayysong

A. -18   和 D. 9

taohuaxian

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

sayysong

谢谢！！