原帖由 prozzy 於 2007-5-18 23:05 發表。 
" s% h$ v% z+ ~8 B- v8 {. V+ u# rTVBNOW 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. tvb now,tvbnow,bttvb5 S+ b0 \3 f2 k, s1 p' |& ]
Think about it this way 5.39.217.761 x# `+ M& n9 n z/ X
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb( h" F) S5 j5 A, q) S4 r' X4 @
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 5.39.217.76 [; G& F& f& o" O' H2 g# \
TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。# ]/ S% M3 _; f2 w, B" ^. w4 f
- l6 j+ b% v& U& D! J3 U1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
, [. z3 h* E4 B$ z' ^; f/ HTVBNOW 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。
# B1 A6 Y4 q( X: r% Rthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.tvb now,tvbnow,bttvb$ a; W( c( n1 Q3 n+ p2 Y! p' b
5 i; C3 z8 s7 Y/ |' y% M1 I5 f; N) F5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |