[計量] PP1-DS-73
看板GMAT (GMAT入學考試)作者wuwuwawa (C.R + Alan => MU)時間16年前 (2008/08/15 23:09)推噓2(2推 0噓 6→)留言8則, 3人參與討論串1/1
73. 6279-!-item-!-187;#058&004943
What is the average (arithmetic mean) of eleven consecutive integers?
(1) The average of the first nine integers is 7.
(2) The average of the last nine integers is 9.
答案 : D
可以請教為什麼嗎?
謝謝
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推
08/15 23:26, , 1F
08/15 23:26, 1F
推
08/15 23:28, , 2F
08/15 23:28, 2F
→
08/16 00:26, , 3F
08/16 00:26, 3F
→
08/16 00:27, , 4F
08/16 00:27, 4F
→
08/16 00:42, , 5F
08/16 00:42, 5F
→
08/16 00:44, , 6F
08/16 00:44, 6F
→
08/16 00:44, , 7F
08/16 00:44, 7F
→
08/16 01:02, , 8F
08/16 01:02, 8F
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