63. 5228-!-item-!-187;#058&004178
If m is a positive odd integer, what is the average (arithmetic mean) of a certain set of m integers?
(1) The integers in the set are consecutive multiples of 3.
(2) The median of the set of integers is 33.
答案是C.
请教大家~
我这样理解的哦...
1)=>说明是个等差数列
2)=>因为是odd个数嘛,说明这几个数的平均数就是median咯
好像思维不太严密哈
我这样理解的哦...
1)=>说明是个等差数列
2)=>因为是odd个数嘛,说明这几个数的平均数就是median咯
好像思维不太严密哈
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