Divide 3 groups first.
0 ]" d% W6 s5 a5 ~ h5.39.217.76i.e. 4 x 4 x 4.
% v/ D" c8 p/ iWeight any 2 groups [1st]
" z9 r; `2 m Q8 P; A- ?then you will know the heavier ball in which group.tvb now,tvbnow,bttvb6 P2 V9 S: ^8 c5 L/ J- U; t
Weight any 2 balls in that group [2nd]
+ C' j' \6 @* H* e, j7 _/ B6 sthen you will know the heavier ball in which 2 balls.- j$ o5 g, ?- {2 r% e! u
Repeat again in remainders [3rd]$ R! W# Z1 d) g& G4 N$ y
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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