Divide 3 groups first.
& W ~& M2 |- f, `- V. L" [) Z0 D4 Bi.e. 4 x 4 x 4.
7 T: b! ?9 R* V' j, OWeight any 2 groups [1st]
% e7 k, @2 L6 o _0 Y+ @2 L3 {tvb now,tvbnow,bttvbthen you will know the heavier ball in which group.
2 F& _# i2 I& `9 g D+ `公仔箱論壇Weight any 2 balls in that group [2nd]公仔箱論壇( v9 q3 Q) r' H
then you will know the heavier ball in which 2 balls.5.39.217.77:8898' J. I- y: W/ v3 g: W; P9 r
Repeat again in remainders [3rd]5.39.217.77:8898 f: ^$ _ Q% S% |! w
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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