Divide 3 groups first./ P4 ]0 b3 e. ?5 c: N; u
i.e. 4 x 4 x 4.
( N' t( t5 P) g! j; l公仔箱論壇Weight any 2 groups [1st]. p4 N9 {& r4 k! N& D2 j1 [
then you will know the heavier ball in which group.
# d4 |( _* J" D$ pTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Weight any 2 balls in that group [2nd]
w# k( v6 M4 L9 t/ a, Zthen you will know the heavier ball in which 2 balls.公仔箱論壇8 @5 Z" k4 Z4 ?0 B! k
Repeat again in remainders [3rd]5.39.217.77:8898 [3 m3 y- H: D9 |, {1 s9 v- z6 ^: W
Got the heavier ball. |