原帖由 prozzy 於 2007-5-18 23:05 發表。 
, c0 R9 U7 j) q( W" w公仔箱論壇the answer is -$97 for sure. 公仔箱論壇& ?" Y! _8 j3 p$ c$ s3 D2 O& i. A
Think about it this way 公仔箱論壇+ r4 z' J0 W& H0 m, E
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。+ @! ~4 }* M7 q: E4 R6 d
2) Now, the owner discovered that the 100 bucks is fake. You can th ... ) @2 ~$ l' E# U( s0 Q8 utvb now,tvbnow,bttvb
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) G3 Z, L, G/ u+ m& m, Ptvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇5 k/ C- R$ Z# _/ N) g# x0 _
2 A' X2 a! p$ @, n ?4 `# tthink 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.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。1 Z2 W& x. T* b; M
" l' q% R1 `/ ^% I3 H, l5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |