［問題］GWD 2-20

[lynn720908]

Shipping Clerk: The five specially ordered shipments sent out last week were sent out on Thursday. Last week, all of the shipments that were sent out on Friday consisted entirely of building supplies, and the shipping department then closed for the weekend. Four shipments were sent to Truax Construction last week, only three of which consisted of building supplies.

If the shipping clerk's statements are true, which of the following must also be true?

A. At least one of the shipments sent to Truax Construction last week was specially ordered.
B. At least one of last week’s specially ordered shipments did not consist of building supplies.
C. At least one of the shipments sent to Truax Construction was not sent out on Thursday of last week.
D. At least one of the shipments that were sent out on Friday of last week was sent to Truax Construction.
E. At least one of the shipments sent to Truax Construction last week was sent out before Friday.

答案是E

請問這篇要怎麼解?我看每題答案都好像對
5件--specially--Thursday.
全部--building supplies--Friday.
4件--送到Truax Construction-- 三件--包含building supplies.
--ㄧ件--不包含
A選項,不包含building的那ㄧ件 可能是星期四寄的,為什麼錯？
B選項, 不對
C選項,我不曉得為啥這題錯? 有三件是在星期五寄的阿!為什麼錯?
D選項.這個看起來也沒錯
E選項,正確答案!

請問A,C,D 選項要怎麼解釋?　
我不要當沒有邏輯的人

[hughes0305]

原題:
週四寄出5件特別訂購的貨送
週五所送出的貨中,全部都是建築材料 (注意: 這句話是說 週五則必建材; 不代表建材一定是週五送喔!!!)
過了週五 貨送部門就關門休息
4件送至Trux的貨送中, 只有3件是建築材料

A. 錯! 從原題中無法推出此結論, 因為即使有1件不是周五寄的, 也不代表它一定是special order, 它有可能是週三運送的吧!
B. 錯! Specially ordered shipments與building supplies無關!
C. 這個選項比較難!! 想一想, 是不是有可能這4件送到Trux的貨都是週四送的呢? 這種情形是有可能的喔!! 原題並沒有把週四所有的貨送資料都寫出來吧? 它只是描述部份的事實!
D. 這個跟C很像, 別忘了, 送去Trux的貨不一定都要週五送啊!!
E. 正解!! 因為既然週五只送building supplies, 而有一件送去Trux的貨不是building supplies, 而週六日又休假, 所以那1件貨必定是週五以前送出的!!!

參考看看吧!!

[lynn720908]

謝謝你唷!! 解釋的很清楚~~