推 Chest:原po正解，第二題(B)因為沒說長寬多少所以條件仍然不夠 03/05 21:25
推 wangyihui400:感謝解惑!!! 03/09 20:20
※ 引述《wangyihui400 (wanda)》之銘言：
: Q2:
: A researcher plans to identify each participant in a certain medical
: experiment with a code consisting of either a single letter or a pair of
: distinct letters written in alphabetic order. What is the least number of
: letters that can be used if there are 12 participants, and each participant
: is to receive a different code?
: A. 4
: B. 5
: C. 6
: D. 7
: E. 8 ANS.B
: 想不出來.....
一個字母 a b c d e
兩個字母 ab bc ac ad bd cd ad be ce de ...很多
所以最少要5個字母
這應該可以用愚公移山吧 才12個...ba不行 因為要是alphabetic order
: Q5:
: Can a certain rectangular sheet of glass be positioned on a rectangular
: tabletop so that it covers the entire tabletop and its edges are parallel to
: the edges of the tabletop?
: (1) The tabletop is 36 inches wide by 60 inches long.
: (2) The area of one side of the sheet of glass is 2,400 square inches.
: ANS.E 我的答案是C ???不懂為什麼是E
我在想會不會是60*40的時候可以
但是如果是120*20 大概就不行了
會是這個點 所以是E嗎??
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To 小天使: 不管 小天使抱我一下
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