原帖由 prozzy 於 2007-5-18 23:05 發表。 
! N1 ^0 E! `" |0 O* Athe answer is -$97 for sure. * ]2 g1 e. P4 M% p# O3 a; J, `
Think about it this way 公仔箱論壇) L4 X# d; ~# t2 n* L3 _ K1 Q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
% g+ z+ t. F4 D2) 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
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' m4 _* G, R3 ^; A# U2 s* fTVBNOW 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.9 `4 f! @0 R7 K; J. k
. `) `. x1 T) v, e6 }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. |
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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