原帖由 prozzy 於 2007-5-18 23:05 發表。 
+ L: J2 g }' b4 D6 I公仔箱論壇the answer is -$97 for sure.
" I0 ?" _! K5 M) I/ o6 j) f公仔箱論壇Think about it this way 公仔箱論壇. P6 F6 } \* f& n5 ^; C
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)2 V. I& v; y- [" O1 I( h- g
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。/ E4 m) H# p9 @$ c T: Q9 U N2 U
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇& p% `% d: t& z( m! N$ p' }0 S
5.39.217.763 Z& V7 U1 `% I+ C1 B9 s
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.5.39.217.76- }# y4 ^( @% [! e4 a7 y7 f
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。$ H7 y5 P+ R: L) Q
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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