PP-PS1完整詳解版-V2[1].0

PP-PS1完整詳解版-V2[1.0

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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 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­...
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This note was uploaded on 12/05/2012 for the course BUSINESS Finance taught by Professor Zheng during the Winter '05 term at Xiamen University.

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