原帖由 prozzy 於 2007-5-18 23:05 發表。 
: [# p6 H c: `1 \' p L" B3 p公仔箱論壇the answer is -$97 for sure. 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。( o' `& X+ b7 r. m
Think about it this way
' U' l2 i2 v h4 z) ~- j; _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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
# t, z* X6 c ?' K# m* @7 Q. u2 W2) Now, the owner discovered that the 100 bucks is fake. You can th ... 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 V X7 J, t5 W, c9 N
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2 Z [' H3 s5 J: H w5.39.217.771) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong9 S3 }9 m H* k: _
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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.tvb now,tvbnow,bttvb: m. X; T! F. F0 R) p3 h
' G9 X! l; _; @公仔箱論壇I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |