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【OG20-P279-304题】If p, r, and s are consecutive integers in ascending order and x is the average(arithmetic mean) of the three integers, what is the value of x?
1. Twice x is equal to the sum of p, r, and s.
2. The sum of p, r, and s is zero.
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条件一:2x=3x 3x-2x=0 x=0,充分
条件二:p+r+s=3x=0,x=0,充分
题目讨论 (3条评论)

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lilixiao
看清题啊
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0 回复 2021-06-27 12:24:52
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你这只猪
回头复习的时候还是稍微想了一下,还是做题不够多,遇到的套路太少
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1 回复 2020-06-18 10:26:40
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Melon143
条件一:2x=3x 3x-2x=0 x=0 条件二:0/3=0 x=0 选D
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0 回复 2019-07-09 20:08:38