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²{¦³¤Q¤G²Éªi¤l¡A¥~§Î§¹¥þ¤@¼Ë¡A¨ä¤¤¤@²É¤ñ¨ä¾lªº¤Q¤@²É»´©Î­«¤@¨Ç¡]¤£¯à¥Î¤â¥h¤À§O¡^¡A²{¦³¤@­Ó¤Ñ¥­ (Beam Balance) ¥Î§@¤ñ¸û»´­«¡A¦ý¥u¥i¤ñ¸û¤T¦¸¡A½Ð°Ý¦p¦ó¦w±Æ¤~¥i§â³o²É­«¶q¤£¦Pªºªi¤l§ä¥X¨Ó¨Ã«ü©ú¬O»´©Î­«¡C
...
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a) 4 vs 4,¦@8²É
b) 2 vs 2,¦@4²É

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Case 1
-¦pªG¨âÃä¤@¼Ë­«,ËݧY«Y°²ªi¤l«Yb)ªG4²É¤J­±
-ºÙ²Ä¤G¦¸,¶q«×b),(¨âÃä¦U¨â²É),­«/»´dªGÃ䦳ªG²Éªi¤l
-ºÙ²Ä¤T¦¸,¶q«×¤W­±ªG¨â²Éªi¤l,­«/»´dªGÃ䦳ªG²Éªi¤l

Case 2
-¦pªG¨âÃä­ø¤@¼Ë­«,ËݧY«Y°²ªi¤l«Ya)ªG8²É¤J­±
-ºÙ²Ä¤G¦¸,¶q«×a)¤J­±­«/»´dªG4²É(¨âÃä¦U¨â²É),­«/»´dªGÃ䦳ªG²Éªi¤l
-ºÙ²Ä¤T¦¸,¶q«×¤W­±­«/»´dªG2²É(¨âÃä¦U¤@²É),­«/»´dªGÃ䦳ªG²Éªi¤l

À³¸Ó«YËÝ...

[ ¥»©«³Ì«á¥Ñ arararchchch ©ó 2009-6-1 12:55 ½s¿è ]

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Case 1, ²Ä¤G¦¸¯¯ªºµ²ªG¤@©w¬O¤@Ãä»´¥t¤@Ãä­«¡Aµ²½×¬O»´ªº¨â²É¤¤¥i¯à¦³¨ä¤¤¤@²É¸û»´©Î­«ªº¤@Ã䪺¨â²É¤¤¦n¯à¦³¨ä¤¤¤@²É¸û­«¡A©Ò¥H§A¤£¥i¯à¦b²Ä¤T¦¸¯¯§ä¨ìµª®×¡C

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Case 1, ²Ä¤G¦¸¯¯ªºµ²ªG¤@©w¬O¤@Ãä»´¥t¤@Ãä­«¡Aµ²½×¬O»´ªº¨â²É¤¤¥i¯à¦³¨ä¤¤¤@²É¸û»´©Î­«ªº¤@Ã䪺¨â²É¤¤¦n¯à¦³¨ä¤¤¤@²É¸û­«¡A©Ò¥H§A¤£¥i¯à¦b²Ä¤T¦¸¯¯§ä¨ìµª®×¡C

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²{´£¨Ñ¥t¤@­Ó¤èªkµ¹»Õ¤U°Ñ¦Ò¡]¤ð»Ý¥Î ¤Ñ¡A¦a¡A¤H¡^¡G

After 1st trial , A B C ¡r¥Ò¤A¤þ ¡÷ either A,B,C is heavier OR ¥Ò,¤A,¤þ is lighter;

For 2nd trial, I'll compare AB with ¥ÒC,

Outcome of 2nd trial will be one of the three follows :

1. AB = ¥ÒC ¡÷ ¤A or ¤þ is lighter,
2. AB ¡r¥ÒC ¡÷ A or B is heavier OR ¥Ò is lighter,
3. AB ¡q ¥ÒC ¡÷ C is heavier.

For 3rd trial, leave it to you.

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¤S¤F¤j®aªºTips,®t¤£¦h¤F...ÁÂÁÂ...¬õ¦r¨º¸Ì¦³°ÝÃD...

³] ABCDEFGHIJKL¬°12²Éªi¤l,½s¸¹¥ô·N

²Ä1¯¯: ABC vs DEF

Case 1) ABC=DEF => ABCDEF¥þ¯u
²Ä2¯¯: ABC vs GHI

  Case 1.1) ABC>GHI => °²=»´,°²¦bGHI
   ²Ä3¯¯: AG vs BH
    Case 1.1.1) AG=BH => I¬O°²,»´¤F
    Case 1.1.2) AG>BH => H¬O°²,»´¤F
    Case 1.1.3) AG<BH => G¬O°²,»´¤F

  Case 1.2) ABC<GHI => °²=­«,°²¦bGHI
   ²Ä3¯¯: AG vs BH
    Case 1.2.1) AG=BH => I¬O°²,­«¤F
    Case 1.2.2) AG>BH => G¬O°²,­«¤F
    Case 1.2.3) AG<BH => H¬O°²,­«¤F

  Case 1.3) ABC=GHI => °²¦bJKL
   ²Ä3¯¯: AJ vs BK => ???

Case 2) ABC>DEF => GHIJKL¥þ¯u
²Ä2¯¯: ABC vs GHI

  Case 2.1) ABC>GHI => °²=­«,°²¦bABC
   ²Ä3¯¯: AG vs BH
    Case 2.1.1) AG=BH => C¬O°²,­«¤F
    Case 2.1.2) AG>BH => A¬O°²,­«¤F
    Case 2.1.3) AG<BH => B¬O°²,­«¤F

  Case 2.2) ABC<GHI => ¤£¥i¯à¦P®ÉGHI>ABC>DEF(¥u±o¤@²É°²),©Ò¥H³oCase¤£¥i¯àµo¥Í

  Case 2.3) ABC=GHI => °²=»´,°²¦bDEF
   ²Ä3¯¯: AD vs BE
    Case 2.3.1) AD=BE => F¬O°²,»´¤F
    Case 2.3.2) AD>BE => E¬O°²,»´¤F
    Case 2.3.3) AD<BE => D¬O°²,»´¤F

Case 3) ABC<DEF => GHIJKL¥þ¯u
²Ä2¯¯: ABC vs GHI

  Case 3.1) ABC>GHI => ¤£¥i¯à¦P®ÉDEF>ABD>GHI(¥u±o¤@²É°²),©Ò¥H³oCase¤£¥i¯àµo¥Í

  Case 3.2) ABC<GHI => °²=»´,°²¦bABC
   ²Ä3¯¯: AD vs BE
    Case 3.3.1) AD=BE => C¬O°²,»´¤F
    Case 3.3.2) AD>BE => B¬O°²,»´¤F
    Case 3.3.3) AD<BE => A¬O°²,»´¤F

  Case 3.3) ABC=GHI => °²=­«,°²¦bDEF
   ²Ä3¯¯: AD vs BE
    Case 2.1.1) AD=BE => F¬O°²,­«¤F
    Case 2.1.2) AD>BE => D¬O°²,­«¤F
    Case 2.1.3) AD<BE => E¬O°²,­«¤F

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>>>²Ä3¯¯: AJ vs BK => ???
      ³oªí¥Ü¦¹¸ô¤£³q¡A¦A¦¸§V¤O¡C

josephlau¥S¦¬PM
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>>>²Ä3¯¯: AJ vs BK => ???
      ³oªí¥Ü¦¹¸ô¤£³q¡A¦A¦¸§V¤O¡C

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ºÉ¤F¤O,ÁÙ¬O¤£¦æ...

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¦^´_ 14# ªº©«¤l

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