[計量] 又是數學的JJ阿...QWQ!求助各位高手~!
官方 81
Each people read a unique amout of book. Find medium of people who
read;
-less or equal to 6 books (4 people)
-7 to 11 books, inclusively (5 people)
-more or equal to 12 books (6 people)
選項 7 8 9 10 11 答案是10 為什麼@@!不是15個人的中位數第9個人嗎@@?
官方 83
7^20 跟 20^7 比大小~ 答案是A 這種題目有甚麼小技巧可以快速分辨的嗎
還是就是第六感@口@?
官方 92
Travelling at 3/4 of a person`s usual speed, he is late by 1hr30mins
What is his usual travel time? 答案 4.5HR 這題我完全沒想法阿...
對不起總是一堆問題求助各位...~"~希望有大大能提點一下
拜託拜託了QWQ....
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推
07/15 22:52, , 1F
07/15 22:52, 1F
推
07/15 22:55, , 2F
07/15 22:55, 2F
→
07/15 22:58, , 3F
07/15 22:58, 3F
推
07/15 22:58, , 4F
07/15 22:58, 4F
→
07/15 22:58, , 5F
07/15 22:58, 5F
→
07/15 22:59, , 6F
07/15 22:59, 6F
推
07/15 23:00, , 7F
07/15 23:00, 7F
→
07/15 23:00, , 8F
07/15 23:00, 8F
推
07/15 23:01, , 9F
07/15 23:01, 9F
→
07/15 23:02, , 10F
07/15 23:02, 10F
推
07/15 23:02, , 11F
07/15 23:02, 11F
推
07/15 23:11, , 12F
07/15 23:11, 12F
→
07/15 23:16, , 13F
07/15 23:16, 13F
推
07/16 01:02, , 14F
07/16 01:02, 14F
→
07/16 01:02, , 15F
07/16 01:02, 15F
推
07/18 02:34, , 16F
07/18 02:34, 16F
→
07/18 02:35, , 17F
07/18 02:35, 17F
推
07/18 02:37, , 18F
07/18 02:37, 18F
→
07/18 02:37, , 19F
07/18 02:37, 19F
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