Divide 3 groups first.公仔箱論壇; @* ?$ Z+ i2 F y+ p9 i
i.e. 4 x 4 x 4.tvb now,tvbnow,bttvb" }+ c( O' c; A/ M
Weight any 2 groups [1st]+ x' Z4 b2 a3 m# R1 r% ~* K
then you will know the heavier ball in which group.公仔箱論壇4 o& R( ^2 Y- q' m2 y
Weight any 2 balls in that group [2nd]
; ~& n+ h2 W) E* |0 l; s2 W. ftvb now,tvbnow,bttvbthen you will know the heavier ball in which 2 balls.
8 u* G% Z' c/ _3 e2 V3 N- a0 }tvb now,tvbnow,bttvbRepeat again in remainders [3rd]
% l! B$ q3 S& e8 |8 ]1 ~ Ewww2.tvboxnow.comGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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