原帖由 prozzy 於 2007-5-18 23:05 發表。 
$ t; ?( B% u8 @, q& c- gTVBNOW 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. ( J) G3 m/ w- w
Think about it this way
- q. j+ a4 M T H6 H" @1 stvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)! o# T. r- r1 X$ s+ d# `
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 6 I/ f1 v: O1 |3 J: R; t* G5.39.217.76
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.76# i( j7 {, @ J$ d8 U0 v$ G
3 o! A$ z9 ?: M* c5 |公仔箱論壇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.
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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. |