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Divide 3 groups first.) P  N/ n& q$ h* j% {! Z
i.e. 4 x 4 x 4.5.39.217.761 B3 f9 r; Z: ]( W9 m0 ^
Weight any 2 groups [1st]5.39.217.76: c% [7 B; K. A2 n5 c) A: r
then you will know the heavier ball in which group.
  W# S: P. C) |# U5.39.217.76Weight any 2 balls in that group [2nd]公仔箱論壇$ q4 F( g( v3 m) X. @
then you will know the heavier ball in which 2 balls.
* n, ]: z5 R8 v8 D( K( ?, IRepeat again in remainders [3rd]
$ `) Q+ q( E" p0 T1 \0 {; ~TVBNOW 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。Got the heavier ball.