Divide the 12 balls into 4 groups of 3's.* }7 w6 e$ Z! i
Weigh group 1 & 2tvb now,tvbnow,bttvb9 R- C8 h) R3 X
then weigh group 2 & 3公仔箱論壇9 z" i1 {% J( x
If the results are Equal & Equal, it means the ball with the different weight is in group 4.
; f# {: s( w6 n5 G1 r公仔箱論壇If the results are Equal & Unequal, it means the ball is in group 3.tvb now,tvbnow,bttvb7 v, L; M" P1 z0 M c
If the results are Unequal & Equal, it means the ball is in group 1.& X# x9 X8 R- i% }
If the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇% w+ E" i6 K- e
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Once you determine the group that contains the ball.
9 Z+ P& u" L& l: |# I: D' dtvb now,tvbnow,bttvbSimply weigh two of the balls |
發表於 2007-11-15 03:54 PM
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