(原雞$8)-(賣$9)=-$1 (賺$1)
2 }7 j0 i4 W2 Q3 f; i$ }; w0 J公仔箱論壇5.39.217.76, t; z. }5 |/ W) P& H+ m8 o
(以$10)-(買回原雞$8)=$2 (蝕$2)5.39.217.76" X4 Z7 `8 a4 C; D
公仔箱論壇9 M1 E4 @; f" @9 \3 ~2 ]( K
($10雞)-(賣$11)=-$1 (賺$1)
6 x; t* O1 q8 \% x5.39.217.765.39.217.767 f: P9 F- n" }5 q. ^/ e
總計=賺$1 蝕$2 賺$1. y$ m! O" v, M- [
5 j5 K0 h5 P( [( G$ X8 ^試問賺2蚊再蝕2蚊...5.39.217.76: ]0 D% {" h& B8 R# X
6 C, }7 y- M9 I4 M y; o$ A1 @答案=0 |