题目信息
Positive integers a, b, c, d and e are such that a < b < c < d < e. If the average (arithmetic mean) of the five numbers is 6 and d - b = 3, then what is the greatest possible range of the five numbers?
A:12
B:17
C:18
D:19
E:20
参考答案及共享解析

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已选答案:
正确答案:
C:18
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题目来源
Magoosh