※ 引述《wangyihui400 (wanda)》之铭言： : 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 : 想不出来..... 一个字母 a b c d e 两个字母 ab bc ac ad bd cd ad be ce de ...很多 所以最少要5个字母 这应该可以用愚公移山吧 才12个...ba不行 因为要是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 ???不懂为什麽是E 我在想会不会是60*40的时候可以 但是如果是120*20 大概就不行了 会是这个点 所以是E吗?? -- To 小天使: 因为.......想被抱一下 ★小天使 没~ To 小天使: 不管 小天使抱我一下 ★小天使 才不要ˋˊ --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 123.192.191.99