Divide 3 groups first.tvb now,tvbnow,bttvb0 s% H9 F- V, d3 o& z/ F7 ~
i.e. 4 x 4 x 4.
7 G8 H% O3 q4 d9 e6 q1 ?Weight any 2 groups [1st]tvb now,tvbnow,bttvb. j4 @ \, o: v
then you will know the heavier ball in which group.公仔箱論壇( ], n4 h& g8 E1 Y
Weight any 2 balls in that group [2nd]% X7 {3 V0 G8 j! r4 t+ U% z& t6 U
then you will know the heavier ball in which 2 balls.
& \6 G2 M' g Y# H; H" U% Ntvb now,tvbnow,bttvbRepeat again in remainders [3rd]tvb now,tvbnow,bttvb4 S( F5 a1 p% C# w' Z8 l5 b6 f
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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