原帖由 prozzy 於 2007-5-18 23:05 發表。 
6 {2 B! w1 U0 {: ttvb now,tvbnow,bttvbthe answer is -$97 for sure.
% K1 V3 T/ M0 k qTVBNOW 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,bttvb5 w1 O* G( |" [% z: @2 M
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)6 A. e1 C* ~ @$ p7 j4 I \
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
9 v& {$ y5 }7 q( `5 P! A7 b1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
$ r3 t8 [$ i4 P 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。9 B$ d$ d2 H0 p& E6 w
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
' D, j- w) n( i F; L+ z4 ATVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
- ~4 G- A3 L$ otvb 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
| 
發表於 2007-7-11 03:19 PM
| 
