divde the 12 balls into 3 sets of 4.
4 k8 p5 {% u/ @/ R' tweight any 2 sets.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。6 Q9 B+ S/ o: {( R5 ^) J
if the 2 sets are equal, then you know the heavy one is in the third
! I& W5 K2 P, V公仔箱論壇if one of the 2 is heavier, then the heavy one is in that set
8 e( l* R3 Q+ R) F" D& vtvb now,tvbnow,bttvbthen divide the 4 balls into 2.tvb now,tvbnow,bttvb% C; F1 }% _( q( G, K/ G7 F
weigh them
4 u4 c! C3 ], k8 m* Land divide the heavier into 1
9 R f! s& { E% xand weight them.
' F9 _7 e6 V$ [+ i) Fwww2.tvboxnow.com3 x weighing and get the ans. 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。4 ?, Q# }6 W& _& e4 U
in less than 15 secs. |