原帖由 prozzy 於 2007-5-18 23:05 發表。 
6 c. j, T4 u, y4 y. ^* g$ V5 |5.39.217.76the answer is -$97 for sure.
% i! J8 w6 o x# G. W Y% t" r4 zThink about it this way 5.39.217.76! e6 Y' z# H- B& @0 C( r
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
- G8 D, O! a Q: u2 k. ]2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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0 ?$ u2 l0 ~2 e- i' e0 O' ?0 @tvb 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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* \! E& `/ L! O& g公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.5.39.217.761 M& Q T8 H- x( k8 L
7 g4 j/ @% |: m- _; J$ R& ftvb now,tvbnow,bttvbI 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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