原帖由 prozzy 於 2007-5-18 23:05 發表。 
8 |/ }* x M& g公仔箱論壇the answer is -$97 for sure.
# M- @% ^+ Y/ m4 Y. o% ktvb now,tvbnow,bttvbThink about it this way 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。, r4 g; X& M! ~3 I& \% ?# B* w" ?0 c
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
6 o" A E4 v0 N' d* iTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ... & t ]+ T" v' z) g6 {tvb now,tvbnow,bttvb2 A1 n0 ?7 y% F% `
tvb now,tvbnow,bttvb) d9 I$ X3 F6 g* ?
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
1 _& Y2 k( ?- b! l( }5.39.217.76
" G6 J) ~9 A; g- o) ]0 g1 athink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.8 `$ ~( I& H1 ~0 X1 r
4 y9 v! F% h; c$ i) F5 sI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |