原帖由 prozzy 於 2007-5-18 23:05 發表。 
& p$ [9 k; j# N: x$ Z+ z! [5.39.217.76the answer is -$97 for sure.
# a: Z* V2 j: Q, N$ R; w$ C1 |% b* 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。Think about it this way
2 X: E' H* a0 _! k; \6 x) f6 |1 V/ H公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
: b2 D. Q; z$ {% t: Y2) Now, the owner discovered that the 100 bucks is fake. You can th ...
3 Y4 |6 C5 e. O' k. [8 s1 ^公仔箱論壇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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4 O3 b* u6 Y! f3 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。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.( `/ w6 s" V+ C/ v7 B# m8 o
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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. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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