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不知道
let me see the answer
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.
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thx you
睇过先知
thanks
我知道
so easy
easy only 1 min done
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