原帖由 prozzy 於 2007-5-18 23:05 發表。 
* u9 V* l4 W1 D# f8 p7 u0 G1 G公仔箱論壇the answer is -$97 for sure. www3.tvboxnow.com2 s! a/ F3 y" j% I: n% ]0 M
Think about it this way TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。9 k$ {' N5 ~- A' Q% y
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
- ~& `. ?% ^9 `2 Z4 ptvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... 5 U3 a' W% Y4 K9 ?公仔箱論壇
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, i% C/ n5 M. {9 u% m* gtvb 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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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.7 f: |. v5 X6 v0 I
2 t; ~6 x+ B/ r0 ^; Etvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |