The median of 10,15, x and y is 18. 5, and x < y. Column A Column B X 22

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问题 The median of 10,15, x and y is 18. 5, and x < y.

Column A Column B
X 22

选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given

答案C

解析 10，15，x和y的中数(median)是18.5，并且x解：本题的正确答案为(C)。由中数是18.5，且x15，否则将无法得到四个数的中数等于18.5这个已知条件，所以有：(15+x)/2=18.5 so, x=22

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The median of 10,15, x and y is 18. 5, and x < y. Column A Column B X 22

GRE QUANTITATIVE

GRE

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