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。7 X4 z3 D7 K7 p9 ~1 v8 ?
the answer is -$97 for sure. TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。9 }4 H/ l8 ~, J! r
Think about it this way 公仔箱論壇; `% ^3 B: d) K$ C7 [
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇, q L4 P. t' D' {6 C9 x$ j! Q
2) Now, the owner discovered that the 100 bucks is fake. You can th ... $ a4 x* c- r Q; ]1 d3 {
5.39.217.762 v0 c" i t5 p9 l5 d F4 H
) t- A7 G. `$ Y3 r5 K# N+ @1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong% R* x# \8 i( F+ L4 |8 H) m
; G- H0 k' U) G8 {! Jthink 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.5.39.217.761 L1 {) n m* J, ]4 R* t9 G
% z1 X9 |* L' DI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |