Divide 3 groups first.
: q- V) e* N& f, z) ei.e. 4 x 4 x 4.
8 q/ L4 _! I7 z! P' ktvb now,tvbnow,bttvbWeight any 2 groups [1st]7 R8 j# A8 Y* q2 N
then you will know the heavier ball in which group.
0 ?$ U2 D* c% C1 t2 |4 }公仔箱論壇Weight any 2 balls in that group [2nd]5.39.217.76! q" H2 N+ Z3 }, X
then you will know the heavier ball in which 2 balls.
; ^! K; F! p% p# N/ N% j, NRepeat again in remainders [3rd]
2 `( F- K; A% S) t1 p/ ^5.39.217.76Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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