divde the 12 balls into 3 sets of 4.
" F- z' J: n5 Y4 }! ^2 W+ uweight any 2 sets.公仔箱論壇3 m D+ a1 E y5 U* R% h @
if the 2 sets are equal, then you know the heavy one is in the third
2 g% X+ E3 \- y( b2 d4 T" P" r: ~公仔箱論壇if one of the 2 is heavier, then the heavy one is in that set
1 d' z- u$ ?" u% g, l, J/ K; F( L8 ZTVBNOW 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。then divide the 4 balls into 2.; f& O; z# {) e' r$ R1 |8 t
weigh them
i. I" d: x, F+ Z5.39.217.77:8898and divide the heavier into 1
( p, ^9 P# x9 S) Qand weight them.
' V* s: N$ k: O7 H. n, B6 V8 ^: S' q3 x weighing and get the ans.
# S8 r0 Q2 R+ h" N公仔箱論壇in less than 15 secs. |