原帖由 prozzy 於 2007-5-18 23:05 發表。 
; s- s8 U9 d/ D) o5 u0 H& l# c+ X5.39.217.77:8898the answer is -$97 for sure.
) }, p$ r1 {% KTVBNOW 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。Think about it this way
* }8 h; R0 W7 E1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
+ x6 u, K8 ]2 U1 m& M5.39.217.77:88982) Now, the owner discovered that the 100 bucks is fake. You can th ...
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。3 c7 R) I" G- [# i& E
5.39.217.77:88983 M8 l1 a) u; q' n
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.77:88988 r* K- a# `1 Y& [ S- R
- b6 C# @4 U7 W( Y0 E) LTVBNOW 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。think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
) c$ i9 n4 A9 u# Z7 }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。
7 \1 {( Z7 e: Q3 k7 E! a0 F0 E- R5.39.217.77:8898I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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