原帖由 prozzy 於 2007-5-18 23:05 發表。  tvb now,tvbnow,bttvb5 B# J2 Y9 a5 [
the answer is -$97 for sure. 公仔箱論壇* V# [. X9 ?: m' L9 Y9 o7 U+ t
Think about it this way TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。% j( U5 [8 z1 ~$ D* L( p4 ~4 S
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb$ S/ B' \* X8 l' y E9 j1 x! i
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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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 wrong公仔箱論壇/ [: s6 e- h. O+ ?
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。; _7 c( p. h# a# X& l2 r. l' R) W$ g
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.# ]0 a* z, c' ]- p( U) a: | P
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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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