[問題]730Test4-13

[mingwhale]

13.
Lists S and T consist of the same number of positive integers. Is the median of the integers in S greater than the average of the integers in T?
(1)the integers in S are consecutive even integers, and the integers in T are consecutive odd integers.
(2)the sum of the integers in S is greater than the sum of integers in T

Ans:C

請問這一題應該怎麼解比較好呢?
謝謝

[spreewell]

這題是要求S數列的中位數要大於T數列的平均數
(1)與(2)單獨的條件皆不充分
合併(1)與(2)我們即可得知S數列發生在T數列之後
舉例：S:2,4,6,8 T:1,3,5,7
所以我們便可求得S數列的中位數的確大於T數列的平均數

[mingwhale]

匠一講就懂了~
感謝大俠再次出手相助(再抱拳)