原帖由 prozzy 於 2007-5-18 23:05 發表。 
: r; S& b+ j! r v) c0 K! ptvb now,tvbnow,bttvbthe answer is -$97 for sure. 公仔箱論壇0 Z7 ?0 { L9 C: j5 c
Think about it this way 5 l5 X* G3 M4 }# Q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 H* {1 M _: f# E5 j& }: r4 NTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5 z) [- ~) v' ^: S1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb9 i. g( x' c0 z% B0 F+ ^2 {
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
; w6 T# K( @+ z- c4 S5.39.217.76 TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。* y- Q9 o& L9 D4 d, a3 u
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-4-9 06:27 PM
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