原帖由 prozzy 於 2007-5-18 23:05 發表。 
3 @) t3 q, U- b& w" b* F6 m1 ~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。the answer is -$97 for sure.
6 B4 h- M3 J* q1 y6 j4 E: W# U% aThink about it this way 5.39.217.76' @& \0 t) W K5 Y2 b+ X
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* d, j( R Q" G0 P公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb. B c" K; e E$ p; d" Z
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。0 o; d2 p7 B/ r+ p3 ?
r' e9 {, V" w5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.76; L( Q5 B6 y( a6 A0 p
: l4 k0 h2 k0 @6 PTVBNOW 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 $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.1 @& g0 n& \" A7 j- y) t, {' [+ v" j: ?; k
tvb now,tvbnow,bttvb; W$ _6 R1 f5 ^
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |