原帖由 prozzy 於 2007-5-18 23:05 發表。  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。8 p5 i: _0 v# s1 i0 N
the answer is -$97 for sure. tvb now,tvbnow,bttvb% l Q0 [. f7 `( M2 s3 Q# Z2 o
Think about it this way 公仔箱論壇8 f8 J: ?* ]; H
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
% @& p- b2 r/ _$ [7 U$ Ptvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
+ G( |* b! @- P, j 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 I* W9 S: W' y# y; k7 s c) b
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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$ m8 v+ k% t! i2 lTVBNOW 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.
! v' n4 {9 M/ ^! f9 g) 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。 ) g0 y1 }3 a1 j8 j5 ^( R& J9 B/ ^
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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