Divide 3 groups first.www2.tvboxnow.com; ], d$ I" h& L
i.e. 4 x 4 x 4.
( b* z) g! R$ U5 C7 E ^& q* _/ C公仔箱論壇Weight any 2 groups [1st], X; s9 ?1 ?# b% D c* d& Y& ^% s
then you will know the heavier ball in which group.5 ~! P9 j* m4 Q2 r5 L
Weight any 2 balls in that group [2nd]
2 V- l# m5 P! ^9 Q) N$ {0 k1 kthen you will know the heavier ball in which 2 balls.
- }6 @8 B7 u' [3 L( H7 H& ?Repeat again in remainders [3rd]
4 N/ z0 ]3 v4 r$ C, o6 @% GGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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