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3 P& Q: t, a1 C, s4 e) K8蚊成本卖9蚊=赚1蚊tvb now,tvbnow,bttvb4 m# N1 ?2 n5 q, o: ]3 w) c! {: q. r
再用10蚊买回来=蚀1蚊公仔箱論壇8 c5 X2 e% E5 M( ]5 W9 H/ _, Z
1-1=0
3 a* n F* p& f7 u& V: x公仔箱論壇-------------------------------tvb now,tvbnow,bttvb4 S4 \4 M- b( e9 B# n& W, `
11-10=1蚊公仔箱論壇$ C6 k$ v) m, J
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5 _" u( q U; r! o3 Stvb now,tvbnow,bttvb答案係1蚊? |
發表於 2009-7-30 07:02 PM
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