原帖由 prozzy 於 2007-5-18 23:05 發表。 
: \, B& q9 @3 E+ QTVBNOW 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。the answer is -$97 for sure.
2 r" \) Z C# F( v( D6 V3 d4 qThink about it this way
8 V* E7 [3 Y6 L* ?2 U: s( i! d公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。. G2 |5 p! v O& a4 x
2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb( W; Y1 ?5 G: e, h
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0 k8 V+ L7 C8 H7 V+ x3 Z! K! t9 wtvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb' W& P# l7 ~1 p0 r
* m! X3 T) {$ r' d# |# B; M5.39.217.77think 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.2 A) B4 h* M7 G* x2 c6 H2 p: o
9 m' K8 n6 ?( ~0 K F# I8 ?公仔箱論壇I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |