原帖由 prozzy 於 2007-5-18 23:05 發表。 
3 h- ?* V& {: `' u w$ C) P公仔箱論壇the answer is -$97 for sure.
$ K( V6 f9 S" _Think about it this way
; e- b. t- B* L$ H+ A1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)www3.tvboxnow.com; E. y: J/ h3 W" i! x' _
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 5 }( |# A+ A2 `$ h6 ltvb now,tvbnow,bttvb
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. M z! }- A" N: TTVBNOW 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) 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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/ a" B, L$ E+ j, @$ X( Cthink 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.
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I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |