(原雞$8)-(賣$9)=-$1 (賺$1)
6 n j1 ]8 e' W$ y/ O7 w* a- Z8 s7 i& x0 s4 R% E/ R* q& ~
(以$10)-(買回原雞$8)=$2 (蝕$2)
d0 |+ {4 t0 s i7 P, P; B5.39.217.77
/ a2 J) {: f* B8 d" o2 n2 Y- @tvb now,tvbnow,bttvb($10雞)-(賣$11)=-$1 (賺$1)
: b6 d7 R( O' \- e, K+ a& Z2 Q( etvb now,tvbnow,bttvbtvb now,tvbnow,bttvb) v9 D3 f9 v) ]8 X# W
總計=賺$1 蝕$2 賺$1
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' ~) t7 ~' c4 M2 ]4 u- M, L試問賺2蚊再蝕2蚊...
4 F( m8 M5 A4 {tvb now,tvbnow,bttvb
6 M% n5 P ^) Z R+ N: m3 |答案=0 |