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(原雞$8)-(賣$9)=-$1 (賺$1)
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(以$10)-(買回原雞$8)=$2 (蝕$2)
) j, e0 t! ^/ t% k7 etvb now,tvbnow,bttvb公仔箱論壇6 R: A7 k0 Z+ Z2 v& _
($10雞)-(賣$11)=-$1 (賺$1)公仔箱論壇5 ^. m3 s3 I% U) D- h

" ]6 r/ p9 m0 _  \公仔箱論壇總計=賺$1 蝕$2 賺$1公仔箱論壇& g+ k8 j0 O5 T1 q0 K& l
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試問賺2蚊再蝕2蚊...tvb now,tvbnow,bttvb9 ~: t+ T/ [7 {  t" }8 m1 U

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