A-A+
The average (arithmetic mean) of 3 different p
问题详情
The average (arithmetic mean) of 3 different positive integers is equal to the average of 5、7、8、9 and 11.
Column A Column B
The greatest possible value of the greatest 21
of the 3 different integers
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请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:C
解析:三个不同正整数的算术平均值等于5、7、8、9和11的平均值。解:本题的正确答案为(C)。比较的左项为3个不同正整数中最大数的最大可能值。5、7、8、9和11平均值是8,故3个正整数的和为3×8=24.因此当另外两数分别为1和2时,3个不同正整数中最大数的最大可能值是21。