原帖由 prozzy 於 2007-5-18 23:05 發表。 
3 h: \3 B1 b3 W I! W0 v8 O公仔箱論壇the answer is -$97 for sure. 5.39.217.76! i6 @3 _2 l ?/ x- n1 k- w
Think about it this way
U. V; R% s5 }' B# V* ~' t- W5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
+ B' n& k; M# w$ T( M公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 7 S. z9 M0 K1 n* F/ |- q2 Z: wTVBNOW 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。) [% w, a) O( y, g
) \$ J$ l1 X+ {- Ltvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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; t% N6 `, v7 Q3 I8 gthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
1 L5 u8 M& n, ZTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 Q8 ^$ ^, B0 e* t( X# |: y
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |