原帖由 prozzy 於 2007-5-18 23:05 發表。 
+ k4 w2 B% X6 ^; Nthe answer is -$97 for sure.
0 D7 K& W$ ]# g" s+ l/ E) S1 M0 `3 pThink about it this way
' K- d4 D( W: o, STVBNOW 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。1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
- \6 k2 N( W0 G6 z/ G) k& `公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 5.39.217.76% N+ ]/ H, E9 F1 n$ j- c% b
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' U2 H2 `" K0 V$ u* x/ mtvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
/ n$ x) P6 ]. k公仔箱論壇
?# E8 Q; ?# C2 Itvb now,tvbnow,bttvbthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
" z1 {8 M# G$ b3 Z, D# {4 |5.39.217.76
4 b% A- y4 R6 t* U. f' s9 l0 ptvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |