原帖由 prozzy 於 2007-5-18 23:05 發表。 
0 V% v9 L9 h7 Q9 z Atvb now,tvbnow,bttvbthe answer is -$97 for sure.
: g+ J6 U5 X! N+ S4 G" ]* E公仔箱論壇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。1 L! U, t0 r, Q4 ~
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18), i. o& ]5 T' S' D/ \, u+ z, M
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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1) 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1 ]3 U0 M7 H% ~% Y/ g5 \. ]9 P' i: `, @
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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.& G( w, P& W; ^% k+ @) n* I
+ s1 A0 o# \" o4 ?I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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