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题库 / GMATAdvanced-DS-25
X,81,73,71,98,73,64
What is the value of X in the above list of 7 numbers?
(1)The average (arithmetic mean) of these 7 numbers is 80.
(2)The range of these 7 numbers is 36.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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（2）注意36可以加到最小的数上也可以加到最大的数上
也可以减到最大数上
哦哦没错没错，谢谢童鞋～
You are welcome
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