原帖由 prozzy 於 2007-5-18 23:05 發表。 
3 s( j% l8 p% ]+ x/ `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。the answer is -$97 for sure. f, Q# |, }9 V% R. a+ a+ s
Think about it this way
5 j% ? @; X' Z5 H% utvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇2 U6 ^9 `& ~5 n! x! [4 v4 h! y
2) Now, the owner discovered that the 100 bucks is fake. You can th ... ' y: ~; K) q# H2 N* S) ?, Y" F
5 q4 R' ` k: |) u, atvb now,tvbnow,bttvb 5 d5 Z2 {5 E" P, M' J7 k; T X7 v0 R* Y
1) 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。7 p1 q: D* Y' V7 F0 Y
, Q( F/ b2 d I P) a, ^# [/ X
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.
( F( |4 A5 T7 H& l5 w g# xtvboxnow.com tvboxnow.com& }( q' {% g7 ~+ P0 I" g6 W/ N
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |