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[Data Sufficiency]

试题详情

题目:

(n-x) + (n-y) + (n-c) + (n-k)
What is the value of the expression above?
(1) The average (arithmetic mean) of x, y, c, and k is n.
(2)   x, y, c, and k are consecutive integers.

选项:

答案:

A

提问:

DS

解答:

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阅读1223
解答: sysadmin

提问:

DS

解答:

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阅读1224
解答: sysadmin老师

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