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。/ F0 Z/ p; L n& F! s
the answer is -$97 for sure. 公仔箱論壇5 D3 c3 @; Q: D' q
Think about it this way TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。- e) t$ l; o: _( J1 h$ T
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
) k: o! ?9 d$ X0 u+ J2) Now, the owner discovered that the 100 bucks is fake. You can th ... , c% h1 {7 j+ K W' M$ w( _! aTVBNOW 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。公仔箱論壇( N: p+ j4 a; h
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。/ h5 }8 F* _: Z- z) N- |
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
# w' g( H+ Z& b" b% B# z公仔箱論壇 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 \7 P6 V4 X: m4 ?5 u& ~
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.
* |- P/ b# w9 z/ S* m. _; I公仔箱論壇 1 K7 }! D0 y [- f2 Q+ ], O
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |