原帖由 prozzy 於 2007-5-18 23:05 發表。 
* F3 Y) ]% ]. M! c3 P5 R2 b7 O5.39.217.76the answer is -$97 for sure. 公仔箱論壇0 j$ h' \; w$ `7 }
Think about it this way
' U( r; C7 u9 z/ q, R, mTVBNOW 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。1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。7 ]! c& H3 D3 n) l
2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb- Y1 Z4 a9 Z4 X; f+ H+ e2 ^% W
TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。3 y3 H, q, @; N* y$ e8 \/ ]6 e- x. a; L
4 q; S8 g7 ~" G# v/ }4 z1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong; [* w9 a- I w# e. {$ b
; {4 c5 N7 k7 ^, D/ MTVBNOW 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 $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
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: X7 o1 R* j" @ {$ ?tvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |