原帖由 prozzy 於 2007-5-18 23:05 發表。 
# e2 I. J- v5 k3 X+ _2 x' S7 ^5 Xtvb now,tvbnow,bttvbthe answer is -$97 for sure.
- `; \5 i( \3 A( c+ T! P4 u5.39.217.76Think about it this way
; T2 j9 ~5 _8 _0 R3 }. l, r5 ~- HTVBNOW 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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)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。; g0 G% u' y; t7 q: ]2 @0 I7 E
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
公仔箱論壇1 b9 j! v5 A5 N- h* _
公仔箱論壇( @: S7 L1 s* x% O; e8 k5 [6 ]7 r
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/ u/ r; O9 {, i1 E+ U' i) z
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。4 V& v3 l* [# q! N8 f
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.+ q" W5 J4 R2 |8 S
8 U, F( W4 s3 \5 a* xI 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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