{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PP-PS1完整詳解版-V2[1].0

A2 b4 c6 d12 e16 94 10331item187058007190

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ­­­ 40. 5629­!­item­!­187;#058&004684 Six machines, each working at the same constant rate, together can complete a certain job in 12 days. How many additional machines, each working at the same constant rate, will be needed to complete the job in 8 days? (A) 2 (B) 3 (C) 4 (D) 6 (E) 8 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 作作作作B 作作作作作作x作作=作作作(作作) 1 1 Sx12(days)=1,S= 12 (six machines),作作作作作作作 72 (作作作作作作作作作) 作作x作作作complete the job in 8 days 1 × X × 8由 1 72 ,X=9,作作作作作作3作作作complete the job in 8 days ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 41. 5676­!­item­!­187;#058&004686 All of the stocks on the over­the­counter market are designated by either a 4­letter or a 5­letter code that is created by using the 26 letters of the alphabet. Which of the following gives the maximum number of different stocks that can be designated with these codes? (A) 2(26^5) (B) 26(26^4) (C) 27(26^4) (D) 26(26^5) (E) 27(26^5) ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 作作作作C 作作作作either a 4­letter or a 5­letter 26 4 + 265 = 264 + 26 × 264 = 264 (1 + 26) = 27 × 264 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­...
View Full Document

{[ snackBarMessage ]}