(原雞$8)-(賣$9)=-$1 (賺$1)
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* E! ~ r9 c7 q8 n$ `(以$10)-(買回原雞$8)=$2 (蝕$2)0 U7 S4 i4 A# a
" \- C0 a" a; N($10雞)-(賣$11)=-$1 (賺$1)) |0 c9 x5 A4 u6 _& @& I( H) L* W1 Z' [
5 o1 @9 C6 T" m# Z: n0 K總計=賺$1 蝕$2 賺$1
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試問賺2蚊再蝕2蚊...
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9 G) S0 v p2 n0 `% b( y+ q公仔箱論壇答案=0 |