原帖由 prozzy 於 2007-5-18 23:05 發表。 
6 B6 G+ K/ T" b# k公仔箱論壇the answer is -$97 for sure. 5.39.217.77:8898$ W. f' a3 P" ^7 @2 e
Think about it this way
% [# X* E# M8 ]9 X3 {公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.77:8898+ x) N3 G1 f) T+ a
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
; d. x8 z ^# f, s) U5.39.217.77:88981) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong* t* y6 r2 ]. g! h
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。' [/ ^: s2 _6 s: L$ M/ {
( X; T& N) \( [ uTVBNOW 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。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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