原帖由 prozzy 於 2007-5-18 23:05 發表。 
( \% C- F' A( h: X7 z3 nTVBNOW 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。the answer is -$97 for sure. 公仔箱論壇# I! t! y6 I0 `- `+ {6 w4 c8 I4 `* h
Think about it this way $ v, @2 M; L3 v
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* |- K: n1 y! w! ~8 x( @2) Now, the owner discovered that the 100 bucks is fake. You can th ...
9 y* H5 M; D$ L: o- J" otvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
; ~6 h8 _: h. g+ \* ^; @公仔箱論壇
* b$ x1 [8 G+ e; yTVBNOW 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, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.8 K& w& e8 ?, w
tvb now,tvbnow,bttvb/ e6 J' U8 E$ @, w8 ]' `( g
I 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
| 
