trista_cheong

Originally posted by playbr2 at 2006-10-18 06:35 PM:
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4 ?$ ]6 f. J% ~( L6 _; O- J咪就係話你醒過頭,所以吾會明其他人吾明D咩囉

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guswan

Originally posted by trista_cheong at 2006-10-18 16:10:8 h9 L( I& s7 F( c3 g8 U7 |
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' [3 v6 s; ?; Y$ m( l9 {李天命d 書聽聞非常正

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睇晒李天命都只得7分..............

pigcat

9分ja~~

trista_cheong

Originally posted by guswan at 2006-10-18 10:26 PM:( R6 c$ w& p/ W

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睇晒李天命都只得7分..............

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% M2 P% z2 m# o# M9 q7 分好多ga la wor 你仲想點?

Chingy

0-13分者为优秀（上限10％）；14－19分者为良好（20％）；20－25分者为中等（30％）；26－48分者为不佳（下限40％）。你的分数是13分，属于优秀。
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first time do it...not a bad grade
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[ Last edited by Chingy on 2006-10-19 at 07:31 PM ]

clkgtr

Modus ponendo ponens. l4 L/ {/ @5 G9 E/ B/ k
P --> Q, 因為 P  所以 Q4 U/ P( E# q. {/ Y9 O* P/ C* `
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Modus tollendo tollens
* g% Q7 V$ \* k1 _" a% @6 vP --> Q, 取得 ~P  所以 ~Q4 N: P# O" d0 Y& r7 k4 G3 ~

6 _+ m0 {7 g! L. UDisjunctive syllogism9 E4 [% m  K1 i2 N: W3 C4 j
P or Q, 取得 ~P  所以 Q
$ `; D$ L5 y, zP or Q, 取得 ~Q  所以 P
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Conjunctive syllogism
8 ]$ p9 a$ G" z; i9 l* m- S~(P & Q), 取得 P  所以 ~Q* G- e  _) }+ v: Q7 o
~(P & Q), 取得 Q  所以 ~P: o+ f, }. k( F0 [% Q
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Hypothetical syllogism
  z' p2 X8 `* qP --> Q, 取得 Q --> R  所以 P --> R
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De Morgan's theorem/ \; y( @2 _$ \! d! T+ C
~(P & Q)  所以 ~P or ~Q
. M  H8 d0 V, }, m: a* S2 D~(P or Q)  所以 ~P & ~Q