原帖由 prozzy 於 2007-5-18 23:05 發表。 
9 R7 C2 m$ @( X- y7 H公仔箱論壇the answer is -$97 for sure.
! c: c& G @+ Y$ W9 `# ]- t% JTVBNOW 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 tvb now,tvbnow,bttvb/ @& N6 `1 j" w2 R* c) K
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5 y% Y: y& F2 D; V. H5 a$ V$ \& Z
2) Now, the owner discovered that the 100 bucks is fake. You can th ... - @9 d! ?8 V: f+ G0 a. R: K2 [www3.tvboxnow.com9 i& ^' Y) C7 {* i; b6 G( d
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。$ E; b8 v% q5 Q2 f {+ j3 J
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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$ A6 C+ f8 O+ [: I0 k$ B2 Fwww3.tvboxnow.comthink 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.
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7 x, [+ C2 J, X: J Gtvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |