原帖由 prozzy 於 2007-5-18 23:05 發表。 
% D% \. `" Y7 ^& _tvb now,tvbnow,bttvbthe answer is -$97 for sure. tvb now,tvbnow,bttvb' L* D6 l0 ]9 }6 p; W
Think about it this way 6 E( M5 o- P& a3 B. C$ r
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇 H9 ^* h# t5 M7 i% N( {2 E
2) Now, the owner discovered that the 100 bucks is fake. You can th ... , ~1 y" H4 O) W( w0 |) f4 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。tvb now,tvbnow,bttvb2 E( e3 O/ P* k5 F
% u1 m M8 z) u1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 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。& ^5 H6 d* ^- V1 t) h
+ f7 _- g9 J3 }, k% U5.39.217.76think 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.8 \6 Y3 h2 v" N5 H' D; w
9 c1 O& J" r7 @: r! XTVBNOW 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。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |