Divide 3 groups first.; m3 S& z% h9 @- \
i.e. 4 x 4 x 4.5.39.217.76% K- ^. N, |6 w7 N2 |
Weight any 2 groups [1st]
' t+ ~( d8 o& Y5 B' ^1 f- A- L5.39.217.76then you will know the heavier ball in which group.
: V9 @* ~) O0 L7 M+ ztvb now,tvbnow,bttvbWeight any 2 balls in that group [2nd]" P3 \3 H/ q8 k$ i) E
then you will know the heavier ball in which 2 balls.
0 \& h! U6 z' J4 ]8 B公仔箱論壇Repeat again in remainders [3rd]5.39.217.76) d( x5 V- s! U
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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