原帖由 prozzy 於 2007-5-18 23:05 發表。 
: r9 I" @1 J3 ?6 D8 k1 tthe answer is -$97 for sure. 公仔箱論壇4 @' }. A- Y4 q9 O' I2 E
Think about it this way 5.39.217.76+ k- K% D; m2 {9 i# t
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
, W6 h( g# [0 d e2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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& U; t, s9 `6 P7 S/ C公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong: f, L D' r; x0 `' \) e
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; p: A) S6 Y' i
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。8 v) W, ~, Y# t1 T. D8 a+ i
tvb now,tvbnow,bttvb" O! u4 d! ]1 X$ T5 B) e
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 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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